Human endometrial stromal cells improve embryo quality by enhancing the expression of insulin-like growth factors and their receptors in cocultured human preimplantation embryos
Fertility and Sterility (1999) - Comments
pubmed: 9988412  issn: 0015-0282  doi: 10.1016/s0015-0282(98)00451-8 

Hung-Ching Liu, Zhi-Ying He, Carol A Mele, Lucinda L Veeck, Owen Davis, Zev Rosenwaks