Retraction of: Luiz A. Del Ciampo, Adriana L. Louro, Ieda R.L. Del Ciampo and Ivan S. Ferraz. 2016. Characteristics of sleep habits among adolescents living in the city of Ribeirão Preto (SP). International Journal of Adolescent Medicine and Health. (DOI 10.1515/ijamh-2016-0012).
Due to technical errors the article was submitted by mistake to two different journals.