Increased levels of redox-active iron in follicular fluid: a possible cause of free radical-mediated infertility in beta-thalassemia major. - Reubinoff,B.E.; Har-EI,R.; Kitrossky,N.; Friedler,S.; Levi,R.; Lewin,A.; Chevion,M. (Am J Obstet Gynecol, 1996)