Loupattarakasem, W., Kowsuwon, W., Laupattarakasem, P. and Eungpinitpong, W. 2013. Efficacy of Zingiber cassumunar ROXB. (Plygesal) in the Treatment of Ankle sprain. Srinagarind Medical Journal. 8, 3 (Nov. 2013), 159–164.