http://reply.papertrans.cn/2/187/18658/18658-11.png
http://reply.papertrans.cn/2/187/18658/18658-12.png
Submitted on: 29 November 2021.
Revised on: 31 December 2021.
Accepted on: 21 January 2022.
___________________JOURNAL OF PERINATAL MEDICINE---WALTER DE GRUYTER GMBH
Submitted on: 22 September 2008.
Revised on: 29 November 2008.
Accepted on: 31 December 2008.
___________________JOURNAL OF PERINATAL MEDICINE---WALTER DE GRUYTER GMBH
Submitted on: 05 August 2003.
Revised on: 31 October 2003.
Accepted on: 15 December 2003.
___________________JOURNAL OF PERINATAL MEDICINE---WALTER DE GRUYTER GMBH
http://reply.papertrans.cn/2/187/18658/18658-16.png
Submitted on: 01 December 1998.
Revised on: 16 March 1999.
Accepted on: 02 May 1999.
___________________JOURNAL OF PERINATAL MEDICINE---WALTER DE GRUYTER GMBH
Submitted on: 12 May 2021.
Revised on: 07 August 2021.
Accepted on: 02 October 2021.
___________________JOURNAL OF PERINATAL MEDICINE---WALTER DE GRUYTER GMBH
http://reply.papertrans.cn/2/187/18658/18658-19.png
http://reply.papertrans.cn/2/187/18658/18658-20.png