Serna Gutiérrez, Araceli, y Julián Esparza Romero. 2018. «Adaptation and Reproducibility of a Questionnaire to Assess Physical Activity in Epidemiological Studies Among Yaqui Indians from Sonora, Mexico». RESPYN Revista Salud Pública Y Nutrición 17 (3):17-25. https://doi.org/10.29105/respyn17.3-3.