From left to right:

Edward F. McClay MD, Professor of Medicine, San Diego Melanoma Program, Vista CA; USA (Medical Oncology)
Douglas S. Reintgen MD, Professor of Medicine, Lakeland Regional Cancer Center, Lakeland FL, USA (Surgical Oncology)
Richarda Classen MD, Dermatology Clinic Heinsberg, Heinsberg, Germany (Dermatology)
Hubert Wagner MD, Institute of Pathology, Kaufbeuren, Germany (Pathology)
Marlene Lessel MD, Institute of Pathology, Kaufbeuren, Germany (Pathology)
Reinhard Bassermann MD, Professor of Pathology, Institute of Pathology, Kaufbeuren, Germany (Pathology)