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Revista De Salud Publica (Bogota, Colombia)|August 16, 2014
[Argentinean general practitioners' practice and counseling regarding physical activity]Lorena Ramírez-Cardona, Ruby Trejo-Varón, Noel C BarengoRevista Panamericana De Salud Publica = Pan American Journal of Public Health|July 24, 2024
Status of the national immunization technical advisory groups in the Americas: recommendations for improvementMiguel Betancourt-Cravioto, Ruby Trejo Varón, Francisco Becerra-Posada, et al.Pageof 1