Reliability and validation of a questionnaire on barriers and facilitators perceiv...
Reliability and Validity of a questionnaire for physical activity assessment in So...
Reliability and validity of a food frequency questionnaire for South American chil...
Reliability and validity of a body image rating scale in South American children a...
Is the measurement of blood pressure by automatic monitor in South American pediat...
Measuring socioeconomic status and environmental factors in the SAYCARE study in S...