@article{article, title  = {{The expression of activin-betaA- and –betaB-subunits, follistatin, and activin type II receptors in fallopian tubes bearing an ectopic pregnancy.}},

 url = {{}},

 year = {{2008}},

 month = {{1}},

 author = {{Refat B and Amer S and Ola B and Chapman NR and Ledger W}},

 doi = {{10.1210/jc.2007-1654}},

 volume = {{93}},

 journal = {{Journal of Clinical Endocrinology and Metabolism}},

 pages = {{293-299}},

 note = {{Accessed on 2024/12/21}}}