Sirirat Panphunpho. (1999) Lung function in sport trained and untrained Thai children and adolescents. Mahidol University,:ม.ป.ท.Sirirat Panphunpho. 1999. Lung function in sport trained and untrained Thai children and adolescents. ม.ป.ท.:Mahidol University,;Sirirat Panphunpho. Lung function in sport trained and untrained Thai children and adolescents. ม.ป.ท.:Mahidol University, 1999. Print.