Stein Martin T, Blum Nathan J, Lukasik Meghan Korey, Crescenzi Victoria, Kimball C Eve, Phalen James A, Volz Vicki A, Fay Lori, Schechtman Merryl
University of California San Diego, Children's Hospital San Diego, USA.
J Dev Behav Pediatr. 2005 Jun;26(3):241-5. doi: 10.1097/00004703-200506000-00013.