1. Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan, R.O.C.
2. Division of Breast Surgery, Department of Surgery, Center for Cancer Research, Kaohsiung Medical University Chung‑Ho Memorial Hospital, Kaohsiung 807, Taiwan, R.O.C.
3. School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei 242, Taiwan, R.O.C.