From the Department of Internal Medicine (Cancer Research)West German Cancer Center, University of Essen Medical School, Essen; Klinikum Krefeld, Krefeld; Klinikum Minden, Minden; Clinic for Hematology and Oncology, Martin-Luther-University, Halle, Germany; Hôpital Ambroise Paré, Paris; Institut Gustave Roussy, Villejuif Cedex; Henri Mondor Hospital, Creteil; Centre Hospitalier Universitaire de Rouen, Rouen-Cedex, France; Servicio de Oncologia Medica, Hospital General de Asturias, Oviedo, Spain;...(2000-07-14時点)