[1] Chung Shan Med Univ, Inst Med, Taichung 402, Taiwan
[2] Natl Hlth Res Inst, Natl Inst Canc Res, Zhunan 350, Taiwan
[3] Changhua Christian Hosp, Dept Obstet & Gynecol, Changhua 500, Taiwan
[4] Changhua Christian Hosp, Womens Hlth Res Lab, Changhua 500, Taiwan
[5] Chung Shan Med Univ, Sch Med, Taichung 402, Taiwan
[6] Chung Shan Med Univ Hosp, Dept Med Res, Taichung 402, Taiwan
[7] Chung Shan Med Univ, Inst Oral Sci, Taichung 402, Taiwan
[8] Chung Shan Med Univ Hosp, Dept Dent, Taichung 402, Taiwan
[9] Chung Shan Med Univ Hosp, Dept Obstet & Gynecol, Taichung 402, Taiwan
[10] Chiayi Chang Gung Mem Hosp, Dept Obstet & Gynecol, Chiayi 613, Taiwan
[11] Chang Gung Univ Sci & Technol, Dept Nursing, Chiayi Campus, Chiayi 613, Taiwan