The paternal-age effect in Apert syndrome is due, in part, to the increased frequency of mutations in sperm

Glaser RL, Broman KW, Schulman RL, Eskenazi B, Wyrobek AJ, Jabs EW. The paternal-age effect in Apert syndrome is due, in part, to the increased frequency of mutations in sperm. Am J Hum Genet. 2003 Oct;73(4):939-47. Epub 2003 Jul 31.