1. Siriraj Hospital,Mahidol University,Thailand,1980
2. Memorial Sloan-Ketting Cancer Center,NewYorkUSA,1992
1. Diplomate Thai Board of Internal Medicine,Siriraj Hospital Mahidol University,1986
1. Siriraj Hospital,Mahidol University,Thailand,1990
2. Northshore University HospitalCornell University,New YorkUSA,1992
1. Short course for specialists in Genomic medicine for cancer pathologists
1. Internal Medicine and Medical Oncology