Hajishafiha M, Dehghan M, Kiarang N, et al. Combined letrozole and clomiphene versus letrozole and clomiphene alone in infertile patients with polycystic ovary syndrome. Drug Design, Development and Therapy. 2013;7:1427–1431.
The publishing details are erroneously reported at 2014; 8:1427–1431, when in fact the paper is published in Drug Design, Development and Therapy, 2013;7:1427–1431.