(1)
Virutamasen, P.; Reinprayoon, D.; Pruksananonda, K.; Wongvathanavikrom, R.; Kriengsinyos, R. Clinical and Metabolic Study of a New Monophasic Formulation Containing Ethinylestradiol and Gestodene. Thai J Obstet Gynaecol 1989, 1, 81-89.