Miyamato T, Sato H, Yogev L, Kleiman S, Namiki M, Koh E, Sakugawa N, Hayashi H, Ishikawa M, Lamb DJ, Sengoku K. Is a genetic defect in Fkbp6 a common cause of azoospermia in humans? Cell Mol Biol Lett. 2006; 11(4):557-69.