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BMC Gastroenterology|May 29, 2013
A multi-country study of intussusception in children under 2 years of age in Latin America: analysis of prospective surveillance dataXavier Sáez-Llorens, F Raúl Velázquez, Pio Lopez, et al.
The New England Journal of Medicine|January 6, 2006
Safety and efficacy of an attenuated vaccine against severe rotavirus gastroenteritisGuillermo M Ruiz-Palacios, Irene Pérez-Schael, F Raúl Velázquez, et al.
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