Warunee Hanpithakpong. (1999) Studies on safety and efficacy of Phlai gel. Mahidol University,:ม.ป.ท.Warunee Hanpithakpong. 1999. Studies on safety and efficacy of Phlai gel. ม.ป.ท.:Mahidol University,;Warunee Hanpithakpong. Studies on safety and efficacy of Phlai gel. ม.ป.ท.:Mahidol University, 1999. Print.