Crausaz, Michel, Josefina Vargas, Roumen Parapanov, Yves Chollet, Marc Wisard, Eric Stettler, Alfred Senn, and Marc Germonda. 2008. “First Evaluation of Human Sperm Quality in Various Geographic Regions of Switzerland”. CHIMIA 62 (5): 395. https://doi.org/10.2533/chimia.2008.395.