Could skipping armpit surgery be safer for early breast cancer?
NCT ID NCT02466737
First seen May 11, 2026 · Last updated May 15, 2026 · Updated 1 time
Summary
This study looks at whether avoiding armpit surgery in early-stage breast cancer patients is as safe as the standard sentinel lymph node biopsy. Over 5,500 women having breast-conserving surgery are being followed to see if skipping armpit surgery leads to fewer side effects without increasing cancer recurrence. The goal is to reduce unnecessary procedures and improve quality of life.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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AKH Celle, Brustzentrum
Celle, Lower Saxony, 29223, Germany
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AN regiomed Klinikum Ansbach
Ansbach, Bavaria, 91522, Germany
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Agaplesion Diakonieklinikum, Brustzentrum
Hamburg, Free and Hanseatic City of Hamburg, 20259, Germany
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Agaplesion Ev. Klinikum, Brustzentrum Schaumburg
Obernkirchen, Lower Saxony, 31683, Germany
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Agaplesion Markus Krankenhaus
Frankfurt am Main, Hesse, 60431, Germany
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Albertinen-Krankenhaus, Brustzentrum
Hamburg, Free and Hanseatic City of Hamburg, 22457, Germany
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Altmark-Klinikum Brustzentrum
Hansestadt Salzwedel, Saxony-Anhalt, 29410, Germany
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Asklepios Paulinenklinik
Wiesbaden, Hesse, 65197, Germany
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Augusta-Klinik
Bochum, Nordrhein, 44791, Germany
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BGZ Dornbirn, Gynäkologie
Dornbirn, 6850, Austria
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BZ Mittelrhein Koblenz+Mayen
Koblenz, Rhineland-Palatinate, 56073, Germany
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Bonifatius-Hospital, Brustzentrum
Lingen, Lower Saxony, 49808, Germany
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Brustzentrum Donau-Riß
Ehingen, Baden-Wurttemberg, 89584, Germany
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Brustzentrum Nordsachsen
Borna, Saxony, 04552, Germany
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Caritas-Krankenhaus Brustzentrum Tauberfranken
Bad Mergentheim, Baden-Wurttemberg, 97980, Germany
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Carl-Thiem-Klinikum
Cottbus, Brandenburg, 03046, Germany
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Charite Campus Mitte
Berlin, State of Berlin, 10117, Germany
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DIAKO Diakonissenkrankenhaus
Flensburg, Schleswig-Holstein, 24939, Germany
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DIAKO Krankenhaus Bremen
Bremen, Free Hanseatic City of Bremen, 28239, Germany
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DRK Kliniken Köpenick
Berlin, State of Berlin, 12559, Germany
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DRK Krankenhaus, Brustzentrum
Sömmerda, Thuringia, 99610, Germany
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DRK-Kliniken Westend
Berlin, State of Berlin, 14050, Germany
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Diakoniekrankenhaus, Frauenklinik
Rotenburg (Wümme), Lower Saxony, 27356, Germany
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Diakonissen-Stiftungs-Krankenhaus Speyer
Speyer, Rhineland-Palatinate, 67346, Germany
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Diakonissenkrankenhaus
Dresden, Saxony, 01099, Germany
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Dietrich Bonhoeffer Klinikum, Brustzentrum
Neubrandenburg, Mecklenburg-Vorpommern, 17036, Germany
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Elisabeth Krankenhaus Kassel
Kassel, Hesse, 34117, Germany
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Euregio-Klinik Brustzentrum Nordhorn
Nordhorn, Lower Saxony, 48527, Germany
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Ev. Krankenhaus, Frauenklinik
Ludwigsfelde, Brandenburg, 14974, Germany
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Evang. Waldkrankenhaus Spandau
Berlin, State of Berlin, 13589, Germany
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Franziskus Hospital Harderberg
Georgsmarienhütte, Lower Saxony, 49124, Germany
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Frauenklinik Freudenstadt
Freudenstadt, Baden-Wurttemberg, 72250, Germany
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Frauenklinik der H.-Heine-Universität
Düsseldorf, Nordrhein, 40225, Germany
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Frauenklinik der Universität Regensburg, Caritas-Krankenhaus St. Josef
Regensburg, Bavaria, 93053, Germany
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Fürst-Stirum-Klinik
Bruchsal, Baden-Wurttemberg, 76646, Germany
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Gynäkologische Praxis
Eggenfelden, Bavaria, 84307, Germany
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Gynäkologische Praxisklinik Harburg
Hamburg, Free and Hanseatic City of Hamburg, 21673, Germany
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Hanusch-Krankenhaus, Brustzentrum
Vienna, 1140, Austria
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Harzklinikum, Brustzentrum Harz
Wernigerode, Saxony-Anhalt, 38855, Germany
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Helios Dr. Horst Schmidt Klinikum
Wiesbaden, Hesse, 65199, Germany
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Helios Klinik
Schkeuditz, Saxony, 04435, Germany
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Helios Klinik Pforzheim
Pforzheim, Baden-Wurttemberg, 75175, Germany
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Helios Klinik Rottweil
Rottweil, Baden-Wurttemberg, 78628, Germany
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Helios Kliniken Schwerin
Schwerin, Mecklenburg-Vorpommern, 19049, Germany
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Helios Klinikum Gifhorn
Gifhorn, Lower Saxony, 38518, Germany
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Helios Klinikum Meiningen, Brustzentrum
Meiningen, Thuringia, 98617, Germany
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Helios Klinikum, Klinik für Gynäkologie
Buch, State of Berlin, 13125, Germany
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Henriettenstiftung Frauenklinik
Hanover, Lower Saxony, 30559, Germany
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Hufeland-Klinik Bad Langensalza
Bad Langensalza, Thuringia, 99947, Germany
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Hämatologisch-onkologische Praxis
Augsburg, Bavaria, 86150, Germany
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Johanniter-Krankenhaus, Frauenklinik
Stendal, Saxony-Anhalt, 39576, Germany
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KH der Barmherzigen Brüder
Saint Veit/Glan, 9300, Austria
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Katharinen-Hospital, Brustzentrum
Unna, Nordrhein, 59423, Germany
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Kepler Universitätsklinikum
Linz, 4020, Austria
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Klinik St. Marienstift
Magdeburg, Saxony-Anhalt, 39110, Germany
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Kliniken Essen-Mitte
Essen, Nordrhein, 45136, Germany
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Kliniken Nordoberpfalz AG, Brustzentrum Weiden
Weiden, Bavaria, 92637, Germany
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Klinikum Aschaffenburg
Aschaffenburg, Bavaria, 63739, Germany
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Klinikum Bayreuth GmbH, Frauenklinik
Bayreuth, Bavaria, 95445, Germany
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Klinikum Böblingen
Böblingen, Baden-Wurttemberg, 71032, Germany
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Klinikum Ernst von Bergmann
Potsdam, Brandenburg, 14467, Germany
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Klinikum Esslingen
Esslingen am Neckar, Baden-Wurttemberg, 73730, Germany
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Klinikum Fichtelgebirge gGmbH, Brustzentrum
Marktredwitz, Bavaria, 95615, Germany
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Klinikum Frankfurt Höchst
Frankfurt am Main, Hesse, 65929, Germany
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Klinikum Fürth
Fürth, Bavaria, 90766, Germany
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Klinikum Hanau GmbH
Hanau, Hesse, 63450, Germany
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Klinikum Harlaching, Frauenklinik
München, Bavaria, 81545, Germany
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Klinikum Kassel
Kassel, Hesse, 34125, Germany
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Klinikum Kempten-Oberallgäu
Kempten (Allgäu), Bavaria, 87439, Germany
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Klinikum Landshut
Landshut, Bavaria, 84034, Germany
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Klinikum Ludwigsburg
Ludwigsburg, Baden-Wurttemberg, 71640, Germany
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Klinikum Ludwigshafen
Ludwigshafen am Rhein, Rhineland-Palatinate, 67063, Germany
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Klinikum Lünen, Brustzentrum
Lünen, Nordrhein, 44534, Germany
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Klinikum Memmingen
Memmingen, Bavaria, 87700, Germany
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Klinikum Mitte, Missio Brustzentrum
Würzburg, Bavaria, 97074, Germany
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Klinikum Mittelbach Brustzentrum
Baden-Baden, Baden-Wurttemberg, 76532, Germany
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Klinikum Märkische Kliniken, Brustzentrum
Lüdenscheid, Nordrhein, 58515, Germany
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Klinikum Obergöltzsch Rodewisch
Rodewisch, Saxony, 08228, Germany
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Klinikum Osnabrück
Osnabrück, Lower Saxony, 49076, Germany
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Klinikum Passau
Passau, Bavaria, 94032, Germany
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Klinikum St. Marien
Amberg, Bavaria, 92224, Germany
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Klinikum Starnberg
Starnberg, Bavaria, 82319, Germany
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Klinikum Traunstein
Traunstein, Bavaria, 83278, Germany
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Klinikum Tuttlingen
Tuttlingen, Baden-Wurttemberg, 78532, Germany
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Klinikum Wolfsburg, Frauenklinik
Wolfsburg, Lower Saxony, 38440, Germany
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Klinikum am Steinenberg
Reutlingen, Baden-Wurttemberg, 72764, Germany
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Klinikum der Universität München
München, Bavaria, 80337, Germany
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Krankenhaus Bietigheim
Bietigheim, Baden-Wurttemberg, 74321, Germany
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Krankenhaus St. Elisabeth und St. Barbara
Halle, Saxony-Anhalt, 06110, Germany
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Krankenhaus St. Joseph-Stift
Dresden, Saxony, 01307, Germany
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Krankenhaus Waldfriede
Berlin, State of Berlin, 14163, Germany
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Kreisklinik Ebersberg
Ebersberg, Bavaria, 85560, Germany
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Kreiskrankenhaus Bergstraße gGmbH
Heppenheim an der Bergstrasse, Hesse, 64646, Germany
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LKH Uni-Klinikum Graz, Gynäkologie
Graz, 8036, Austria
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Landes-Krankenhaus Wolfsberg, Chirurgie
Wolfsberg, 9400, Austria
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MHH Frauenklinik
Hanover, Lower Saxony, 30625, Germany
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Main-Kinzig-Kliniken Gelnhausen
Gelnhausen, Hesse, 63571, Germany
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Marien-Hospital
Wesel, Nordrhein, 46483, Germany
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Marienhospital Bottrop
Bottrop, Nordrhein, 46236, Germany
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Marienkrankenhaus
Schwerte, Nordrhein, 58239, Germany
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Ordensklinikum-BHS
Linz, 4010, Austria
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Ostalb-Klinikum, Brustzentrum Aalen
Aalen, Baden-Wurttemberg, 73430, Germany
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Park-Klinik Weißensee
Berlin, State of Berlin, 13086, Germany
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Rems-Murr Klinik
Schorndorf, Baden-Wurttemberg, 73614, Germany
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Rems-Murr Kliniken
Winnenden, Baden-Wurttemberg, 71364, Germany
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Rotkreuzklinik Würzburg
Würzburg, Bavaria, 97070, Germany
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SRH Waldklinikum
Gera, Thuringia, 07548, Germany
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SRH Zentralklinikum Suhl
Suhl, Thuringia, 98527, Germany
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Sana Klinikum Berlin-Lichtenberg
Berlin, State of Berlin, 10365, Germany
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Sana Klinikum Offenbach
Offenbach, Hesse, 63069, Germany
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Sana-Klinik
Eutin, Schleswig-Holstein, 23701, Germany
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Sana-Klinikum Biberach
Biberach, Baden-Wurttemberg, 88400, Germany
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Schwarzwald-Baar Klinikum
Villingen-Schwenningen, Baden-Wurttemberg, 78050, Germany
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Siloah St. Trudpert Klinikum
Pforzheim, Baden-Wurttemberg, 75179, Germany
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St. Bernward Krankenhaus
Hildesheim, Lower Saxony, 31134, Germany
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St. Elisabeth Krankenhaus
Leipzig, Saxony, 04277, Germany
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St. Elisabeth Krankenhaus, Brustzentrum
Cologne, Nordrhein, 50935, Germany
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St. Elisabethen Krankenhaus
Loerrach, Baden-Wurttemberg, 79539, Germany
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St. Franziskus-Hospital
Münster, Nordrhein, 48145, Germany
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St. Gertrauden Krankenhaus
Berlin, State of Berlin, 10713, Germany
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St. Josef-Hospital, BZ Rhein-Sieg
Troisdorf, Nordrhein, 53840, Germany
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St. Josefs-Hospital, Frauenklinik
Wiesbaden, Hesse, 65189, Germany
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St. Joseph Stift
Bremen, Free Hanseatic City of Bremen, 28209, Germany
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St. Marienkrankenhaus, Frauenklinik
Siegen, Nordrhein, 57072, Germany
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Stadtkrankenhaus Worms
Worms, Rhineland-Palatinate, 67550, Germany
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Städtisches Klinikum
Görlitz, Saxony, 02828, Germany
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Städtisches Klinikum Brandenburg
Brandenburg an der Havel, Brandenburg, 14770, Germany
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Städtisches Klinikum Karlsruhe
Karlsruhe, Baden-Wurttemberg, 76133, Germany
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Uniklinik Köln
Cologne, Nordrhein, 50931, Germany
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Universität Dresden, Frauenklinik
Dresden, Saxony, 01307, Germany
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Universität Greifswald, Frauenklinik
Greifswald, Mecklenburg-Vorpommern, 17475, Germany
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Universität Halle/Saale, Frauenklinik
Halle, Saxony-Anhalt, 06120, Germany
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Universitäts-Frauenklinik
Rostock, Mecklenburg-Vorpommern, 18059, Germany
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Universitätsfrauenklinik
Tübingen, Baden-Wurttemberg, 72076, Germany
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Universitätsfrauenklinik Bonn
Bonn, Nordrhein, 53105, Germany
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Universitätsfrauenklinik Salzburg
Salzburg, State of Salzburg, 5020, Austria
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Universitätsfrauenklinik Ulm
Ulm, Baden-Wurttemberg, 89075, Germany
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Universitätsklinikum Brustzentrum
Frankfurt am Main, Hesse, 60590, Germany
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Universitätsklinikum Essen Frauenklinik
Essen, Nordrhein, 45122, Germany
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Universitätsklinikum Freiburg
Freiburg im Breisgau, Baden-Wurttemberg, 79106, Germany
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Universitätsklinikum Hamburg, Brustzentrum
Hamburg, Free and Hanseatic City of Hamburg, 20246, Germany
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Universitätsklinikum Heidelberg
Heidelberg, Baden-Wurttemberg, 69120, Germany
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Universitätsklinikum Jena
Jena, Thuringia, 07747, Germany
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Universitätsklinikum Leipzig, Brustzentrum
Leipzig, Saxony, 04103, Germany
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Universitätsklinikum Münster
Münster, Nordrhein, 48149, Germany
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Universitätsklinikum Schleswig-Holstein, Campus Lübeck
Lübeck, Schleswig-Holstein, 23538, Germany
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Universitätsklinikum Schleswig-Hostein
Kiel, Schleswig-Holstein, 24105, Germany
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ViDia Christliche Kliniken, Diakonissenkrankenhaus Karlsruhe
Karlsruhe, Baden-Wurttemberg, 76199, Germany
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Vinzenzkrankenhaus Hannover
Hanover, Lower Saxony, 30559, Germany
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Westpfalz Klinikum
Kaiserslautern, Rhineland-Palatinate, 67655, Germany
Conditions
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