http://reply.papertrans.cn/3/236/23505/23505-31.png
http://reply.papertrans.cn/3/236/23505/23505-32.png
http://reply.papertrans.cn/3/236/23505/23505-33.png
Submitted on: 24 January 2010.
Revised on: 27 February 2010.
Accepted on: 21 March 2010.
Obstetrician & Gynaecologist
http://reply.papertrans.cn/3/236/23505/23505-35.png
Submitted on: 26 February 2023.
Revised on: 22 March 2023.
Accepted on: 10 April 2023.
Obstetrician & Gynaecologist