Alamo-Junquera D, Sunyer J, Iniguez C, Ballester F, Garcia-Esteban R, Forns J, Turner MC, Lertxundi A, Lertxundi N, Fernandez-Somoano A, Rodriquez-Dehli C, Julvez J. Prenatal head growth and child neuropsychological development at age 14 months. Am J Obstet Gynecol. 2015 May;212(5):661e1-e11. doi: 10.1016/j.ajog.2014.12.001
Pueschel SM, Rothman KJ, Ogilby JD. Birth weight of children with down's syndrome. Am J Ment Defic. 1976 Jan;80(4):442-5.