1. Bjorndhal L, Mortimer D, Barratt C, Castilla J, Menkveld R, Kvist U, et al. A practical guide to basic laboratory andrology. Cambridge: Cambridge University Press; 2010.
2. World Health Organization, editor. WHO laboratory manual for the examination and processing of human semen. 5th ed. Geneva: World Health Organization; 2010.
3. Aitken RJ, Clarkson JS. Significance of reactive oxygen species and antioxidants in defining the efficacy of sperm preparation techniques. J Androl. 1988;9:367–76.
4. Henkel RR, Schill WB. Sperm preparation for ART. Reprod Biol Endocrinol. 2003;1:108.
5. Correa-Perez JR, Fernandez-Pelegrina R, Aslanis P, Zavos PM. Clinical management of men producing ejaculates characterized by high levels of dead sperm and altered seminal plasma factors consistent with epididymal necrospermia. Fertil Steril. 2004;81:148–50.