Sompol Siriruttanapruk. (1999) Drug-related hospital admissions in elderly patients of medical ward at Ramathibodi hospital. Mahidol University,:ม.ป.ท.Sompol Siriruttanapruk. 1999. Drug-related hospital admissions in elderly patients of medical ward at Ramathibodi hospital. ม.ป.ท.:Mahidol University,;Sompol Siriruttanapruk. Drug-related hospital admissions in elderly patients of medical ward at Ramathibodi hospital. ม.ป.ท.:Mahidol University, 1999. Print.