Letrozole in Preventing Cancer in Postmenopausal Women Who Have Received 4-6 Years of Hormone Therapy for Hormone Receptor-Positive, Lymph Node-Positive, Early-Stage Breast Cancer

Christchurch Hospital, Christchurch

Fundacion Arturo Lopez Perez, Santiago

Instituto Nacional de Enfermedades Neoplasicas, Lima

Institut Jules Bordet, Brussels

Medical University of Vienna, Vienna

Academisch Ziekenhuis der Vrije Universiteit Brussel, Brussels

National Institute of Oncology - Budapest, Budapest

Cliniques Universitaires Saint-Luc, Brussels

Kantonsspital Freiburg, Fribourg

Hospital Santiago Oriente Dr. Luis Tisne Brousse, Peñalolén

Waikato Hospital, Hamilton

Prince of Wales Private Hospital, Randwick

Concord Repatriation General Hospital, Concord

Sandton Oncology Medical Research, Sandton

Bankstown - Lidcombe Hospital, Bankstown

Breast Center, Gateshead

Sint-Elisabethziekenhuis, Turnhout

Calvary Mater Newcastle, Waratah

Tamworth Base Hospital, Tamworth

Armidale Hospital, Armidale

Port Mcquarie Base Hospital, Port Macquarie

Tweed Heads Hospital, Tweed Heads

Algemeen Ziekenhuis Sint-Maarten - Campus Rooiberg, Duffel

Southern Highlands Cancer Center, Bowral

Imelda vzw, Ziekenhuis, Bonheiden

AZ Klina, Brasschaat

Peter MacCallum Cancer Centre, East Melbourne

Austin Health, Heidelberg

Box Hill Hospital, Box Hill

Maroondah Hospital, Melbourne

Hillerod Hospital, Hillerød

Virga Jesse Hospital, Hasselt

Regionalspital, Thun

Bornholms Hospital, Rønne

Centre Hospitalier Regional de la Citadelle, Liège

Clinique Saint Vincent, Rocourt

Roskilde Amtssygehuset, Roskilde

Centre Hospitalier Hutois, Huy

Klinikum Kreuzschwestern Wels GmbH, Wels

Naestved Hospital, Næstved

Royal Perth Hospital, Perth

Sonderborg Sygehus, Sønderborg

Lago Maggiore Oncology Foundation, Locarno

"Ospedale la Carita, Locarno", Locarno

Cliniques du Sud Luxembourg, Arlon

Centre Hospitalier de l'Ardenne, Libramont

Royal Hobart Hospital, Hobart

Hopital de Jolimont, Haine-Saint-Paul

North West Regional Hospital, Burnie

Tygerberg Hospital, Cape Town

AZ Damiaan, Ostend

AZ Groeninge - Oncologisch Centrum, Kortrijk

Brustzentrum Thurgau at Kantonsspital Frauenfeld, Frauenfeld

Viborg Sygehus, Viborg

AZ Nikolaas - Sint-Niklaas, Sint-Niklaas

LKH Villach, Villach

Ospedale degli Infermi - ASL 12, Biella

European Institute of Oncology, Milan

Ospedale di Circolo e Fondazione Macchi, Varese

Spedali Civili di Brescia, Brescia

Azienda Istituti Ospitalieri, Cremona

M. D. Anderson International Espana SA, Madrid

Hospital Ramon y Cajal, Madrid

Hospital Universitario 12 de Octubre, Madrid

Allgemeinen Krankenhaus Celle Kinderklinik, Celle

Vinzenzkrankenhaus Hannover gGmbH, Hanover

Frauenheilkunde u. Geburtshilfe, Ilsede

Institut Bergonie, Bordeaux

Centro di Riferimento Oncologico - Aviano, Aviano

Azienda Sanitaria di Bolzano, Bolzano

Johanniter Kankenhaus Stendal, Stendal

Hospital Universitario Virgen Macarena, Seville

Hospital Sant Joan de Reus, Reus

Instituto Valenciano De Oncologia, Valencia

Hospital Clinico Universitario de Valencia, Valencia

Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, Meldola

Ospedale Civile Rimini, Rimini

Misericordia e Dolce Hospital, Prato

A. Perrino Hospital, Brindisi

Aalen Breast Center, Aalen

Klinikum Memmingen, Memmingen

Praxis Dr. Wilke - Onkologie am Klinikum Fuerth, Fürth

Klinikum Deggendorf, Deggendorf

SRH Zentralklinikum Suhl GmbH, Suhl

Klinikum Meiningen GmbH, Meiningen

Russian Academy of Medical Sciences Cancer Research Center, Moscow

Tata Memorial Hospital, Mumbai

Dana-Farber/Harvard Cancer Center at Dana-Farber Cancer Institute, Boston

Faulkner Hospital, Boston

Landeskrankenhaus Feldkirch, Feldkirch

Medizinische Universitaet Graz, Graz

Innsbruck Universitaetsklinik, Innsbruck

Krankenhaus BHS Linz, Linz

Allgemeines Krankenhaus Linz, Linz

St. Johanns-Spital, Salzburg

Allgemeines Krankenhaus - Universitatskliniken, Vienna

Krankenhaus Lainz, Vienna

Hanusch-Krankenhaus, Vienna

Ziekenhuis Netwerk Antwerpen Middelheim, Antwerp

Centre Hospitalier Universitaire Brugmann, Brussels

Universitair Ziekenhuis Gent, Ghent

U.Z. Gasthuisberg, Leuven

Clinique Saint-Joseph, Liège

CHU Liege - Domaine Universitaire du Sart Tilman, Liège

Jan Palfijn Hospital, Merksem

Clinique Saint-Pierre, Ottignies

Centre Hospitalier Peltzer-La Tourelle, Verviers

Hospital Clinico San Borja Arriaran, Santiago

Instituto Nacional Del Cancer, Santiago

IRAM - Chile, Santiago

Hospital Clinico Regional de Valdivia at University Austral de Chile, Valdivia

Hospital Carlos Van Buren, Valparaíso

Sagara Hospital, Kagoshima

Malarsjukhuset Hospital, Eskilstuna

Aarhus Universitetshospital - Aarhus Sygehus, Aarhus C

Copenhagen County Herlev University Hospital, Copenhagen

Centralsygehus Esbjerg, Esbjerg

Herning Central Hospital, Herning

Odense University Hospital, Odense

Vejle Sygehus, Vejle

Onkologische Schwerpunktpraxis Bielefeld, Bielefeld

Henriettenstiftung Krankenhaus, Hanover

Gynaekologisch-onkologische Praxis Hannover, Hanover

Asklepios Klinik Lich, Lich

Gemeinschaftspraxis Gynaekologie & Geburtshilfe, Mannheim

Klinikum Offenback GmbH, Offenbach

Deaconess Hospital, Schwäbisch Hall

Universitaetsklinikum Tuebingen, Tübingen

Szeged University, Szeged

Fondazione Salvatore Maugeri, Pavia

Osaka Rosai Hospital, Sakai

Kumamoto University Faculty of Medical and Pharmaceutical Sciences, Kumamoto

Kyoto University Hospital, Kyoto

Niigata Cancer Center Hospital, Niigata

Yao Municipal Hospital, Osaka

Tokyo Metropolitan - Komagome Hospital, Tokyo

Vall d'Hebron University Hospital, Barcelona

Hospital Son Llatzer, Palma de Mallorca

Hospital de Torrevieja, Torrevieja

Lasarettet i Boras, Borås

Sahlgrenska University Hospital, Gothenburg

Lidkoping Hospital, Lidköping

Skaraborgs Hospital, Skövde

Karolinska University Hospital - Huddinge, Stockholm

Kantonsspital Aarau, Aarau

Kantonsspital Baden, Baden

Istituto Oncologico della Svizzera Italiana - Ospedale San Giovanni, Bellinzona

Inselspital Bern, Bern

Oncocare Sonnenhof-Klinik Engeriedspital, Bern

AndreasKlinik Cham Zug, Cham

Kantonsspital Graubuenden, Chur

Centre Hospitalier Universitaire Vaudois, Lausanne

Ospedale Civico, Lugano

Ospedale Beata Vergine, Mendrisio

Kantonsspital Olten, Olten

Tumor Zentrum ZeTup St. Gallen und Chur, Sankt Gallen

Kantonsspital - St. Gallen, Sankt Gallen

Hopital Regional de Sion-Herens-Conthey, Sion

Kantonsspital Winterthur, Winterthur

Breast Center, Zurich

City Hospital Triemli, Zurich

UniversitaetsSpital Zuerich, Zurich

Borders General Hospital, Melrose

Dumfries & Galloway Royal Infirmary, Dumfries