Comparative evaluation of the effects of Withania somnifera with pentoxifylline on the sperm parameters in idiopathic male infertility: A triple-blind randomised clinical trial - Nasimi Doost Azgomi, R; Nazemiyeh, H; Sadeghi Bazargani, H; Fazljou, S MB; Nejatbakhsh, F; Moini Jazani, A; Ahmadi AsrBadr, Y; Zomorrodi, A (Andrologia, 2018)