Thongchai Nonthadid. (1994) Cardiovascular autonomic function test in Thai normal subjects. Mahidol University,:ม.ป.ท.Thongchai Nonthadid. 1994. Cardiovascular autonomic function test in Thai normal subjects. ม.ป.ท.:Mahidol University,;Thongchai Nonthadid. Cardiovascular autonomic function test in Thai normal subjects. ม.ป.ท.:Mahidol University, 1994. Print.