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Grunau RE, Cepeda IL, Chau CM, Brummelte S, Weinberg J, Lavoie PM, Ladd M, Hirschfeld AF, Russell E, Koren G, Van Uum S, Brant R, Turvey SE.Grunau RE, et al.PLoS One. 2013 Sep 16;8(9):e73926. doi: 10.1371/journal.pone.0073926. eCollection 2013.PLoS One. 2013.PMID: 24066085Free PMC article.