1. From the Johannes Gutenberg-University, Mainz, Germany; Hôpital de Hautepierre, Strasbourg; Hôpital Saint-Louis, Paris; Hôpital Lyon Sud, Pierre Bénite, France; The University of Texas M. D. Anderson Cancer Center, Houston, TX; University Hospital Gasthuisberg, Leuven; University Hospital Gent, Gent, Belgium; Princess Margaret Hospital, Toronto, ON, Canada; University Hospital, Uppsala, Sweden; and Wyeth Research, Cambridge, MA.