Abtahian, A., Fakhredin, H. and Darvish, S. (2020) “Association of the Low Pregnancy-Associated Plasma Protein A and Pregnancy Complications in the First Trimester: A Prospective Cohort Study”, School of Medicine Students’ Journal, 2(4), pp. 1–4. doi: 10.22037/smsj.v2i4.23230.