Investigational drugs for the treatment of endometriosis, an update on recent developments. Expert Opin Investig Drugs Posted on 17 May 20187 February 2020 by admin Barra F, Scala C, Mais V, Guerriero S, Ferrero S. Investigational drugs for the treatment of endometriosis, an update on recent developments. Expert Opin Investig Drugs 2018;27:445-458.Impact factor: 3,883https://www.tandfonline.com/doi/abs/10.1080/13543784.2018.1471135?journalCode=ieid20