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McQuaid EL, Everhart RS, Seifer R, Kopel SJ, Mitchell DK, Klein RB, Esteban CA, Fritz GK, Canino G.McQuaid EL, et al. Among authors: kopel sj.Pediatrics. 2012 Jun;129(6):e1404-10. doi: 10.1542/peds.2011-1391. Epub 2012 May 7.Pediatrics. 2012.PMID: 22566417Free PMC article.
McQuaid EL, Kopel SJ, Nassau JH.McQuaid EL, et al. Among authors: kopel sj.J Dev Behav Pediatr. 2001 Dec;22(6):430-9. doi: 10.1097/00004703-200112000-00011.J Dev Behav Pediatr. 2001.PMID: 11773808
McQuaid EL, Kopel SJ, Klein RB, Fritz GK.McQuaid EL, et al. Among authors: kopel sj.J Pediatr Psychol. 2003 Jul-Aug;28(5):323-33. doi: 10.1093/jpepsy/jsg022.J Pediatr Psychol. 2003.PMID: 12808009
McQuaid EL, Walders N, Kopel SJ, Fritz GK, Klinnert MD.McQuaid EL, et al. Among authors: kopel sj.J Pediatr Psychol. 2005 Sep;30(6):492-502. doi: 10.1093/jpepsy/jsi074. Epub 2005 Mar 3.J Pediatr Psychol. 2005.PMID: 16055487
McQuaid EL, Koinis Mitchell D, Walders N, Nassau JH, Kopel SJ, Klein RB, Wamboldt MZ, Fritz GK.McQuaid EL, et al. Among authors: kopel sj.J Pediatr Psychol. 2007 Mar;32(2):167-77. doi: 10.1093/jpepsy/jsj112. Epub 2006 May 22.J Pediatr Psychol. 2007.PMID: 16717140