Funding for this research was provided by:
Beijing Natural Science Foundation of China (No. 7172163)
The National Key Research and Development Program of China (2016YFC1000803 and 2016YFC1000307-5)
National Research Institute for Family Planning (No. 2015GJZ01)
Received: 29 September 2017
Revised: 4 December 2017
Accepted: 15 January 2018
First Online: 13 February 2018
: The animal-related experiments, including the isolation of human umbilical cord mesenchymal stem cells and the rat endometrial injury modeling, were approved by the Animal Care and Utilization Committee of National Research Institute for Family Planning (Ethics Number 2015-16). All applicable institutional and national guidelines for the care and use of animals were followed.
: All authors gave consent for publication.
: The authors declare that they have no competing interests.
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