- Correspondence to Dr Kah Teik Chew, Department of Obstetrics and Gynaecology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56000, Malaysia;
- Received July 17, 2017
- Revised May 7, 2018
- Accepted May 14, 2018
- First published June 1, 2018.
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