Suchartwatnachai, C., Theppisai, U., Preutthipan, S., Jirapinyo, M., Thanuntaseth, C. and Chittacharoen, A. 1997. Endometrial Thickness in Asymptomatic Postmenopausal Women . Thai Journal of Obstetrics and Gynaecology. 9, 3 (Sep. 1997), 219–223.