title: N-acetyl cysteine plus clomiphene citrate versus metformin and clomiphene citrate in treatment of clomiphene-resistant polycystic ovary syndrome: a randomized controlled trial.
authors.affiliation: Department of Obstetrics and Gynecology, Mansoura University Hospitals, Mansoura Faculty of Medicine, Mansoura, Egypt. hatem_ah@hotmail.com
authors.forename: Hatem
authors.initials: H
authors.lastname: Abu Hashim
authors.forename: Kamal
authors.initials: K
authors.lastname: Anwar
authors.forename: Rafat Abd
authors.initials: RA
authors.lastname: El-Fatah