1Hacettepe Medical Faculty, Department of Internal Medicine, Ankara, Turkey
2Hacettepe University Institute of Oncology, Ankara, Turkey
3Hacettepe Medical Faculty Department of Pathology, Ankara, Turkey
Reprint requests and correspondence: Mustafa Kadri Altundağ, MD, Hacettepe University, Oncology Institute, Department of Medical Oncology, Sıhhiye, 06100, Ankara, Turkey.
Received 23 May 2000; accepted 06 June 2000