2014 – Physical activity promotion in Latin American populations: a systematic review on issues of internal and external validity.

2014 Galaviz KI, Harden SM, Smith E, Blackman KC, Berrey LM, Mama SK, Almeida FA, Lee RE, Estabrooks PA. Physical activity promotion in Latin American populations: a systematic review on issues of internal and external validity. Int J Behav Nutr Phys Act. 2014 Jun 17;11:77. doi: 10.1186/1479-5868-11-77. 24938641