Gao, J.(1997). Progesterone Receptor (PR) Inhibits Expression of Insulin-Like Growth Factor-Binding Protein-1 (IGFBP-1) in Human Endometrial Cell Line HEC-1B: Characterization of the Inhibitory Effect of PR on the Distal Promoter Region of the IGFBP-1 Gene. Molecular Endocrinology, 11(7), 973-979. doi:10.1210/me.11.7.973

Gao, J. "Progesterone Receptor (PR) Inhibits Expression of Insulin-Like Growth Factor-Binding Protein-1 (IGFBP-1) in Human Endometrial Cell Line HEC-1B: Characterization of the Inhibitory Effect of PR On the Distal Promoter Region of the IGFBP-1 Gene". Molecular Endocrinology, 11.7 ( 1997 ): 973-979.