Authors: Christopher L R Barratt; R John Aitken; Lars Björndahl; Douglas T Carrell; Peter de Boer; Ulrik Kvist; Sheena E M Lewis; Sally D Perreault; Melissa J Perry; Liliana Ramos; Bernard Robaire; Steven Ward; Armand Zini Journal: Hum Reprod Date: 2010-02-06 Impact factor: 6.918