**Author details**

Chao Le Meng Bao1 , Erin Y. Teo1,2, Mark S.K. Chong1,3, Yuchun Liu1,3, Mahesh Choolani1 and Jerry K.Y. Chan1,2,4

1 Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine. National University of Singapore, Singapore

2 Department of Reproductive Medicine, KK Women's and Children's Hospital, Singapore

3 Division of Bioengineering, School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore

4 Cancer and Stem Cell Biology Program, Duke-NUS Graduate Medical School, Singapore
