Pornpimol Charntaraviroj. (1989) The study of effects of continuous ultrasound using stationary technique in normal subjects. Mahidol University,:ม.ป.ท.Pornpimol Charntaraviroj. 1989. The study of effects of continuous ultrasound using stationary technique in normal subjects. ม.ป.ท.:Mahidol University,;Pornpimol Charntaraviroj. The study of effects of continuous ultrasound using stationary technique in normal subjects. ม.ป.ท.:Mahidol University, 1989. Print.