Wanvipa Umpan. (2004) Relation between oral contraceptive use and breast cancer in women /. Mahidol University,:ม.ป.ท.Wanvipa Umpan. 2004. Relation between oral contraceptive use and breast cancer in women /. ม.ป.ท.:Mahidol University,;Wanvipa Umpan. Relation between oral contraceptive use and breast cancer in women /. ม.ป.ท.:Mahidol University, 2004. Print.