A new formula proposal for placing pH-impedance catheters in pediatric patients P.X. Sempértegui-Cárdenas; E.M. Toro-Monjaraz; F.E. Zárate-Mondragón; K. Ignorosa-Arellano; J.F. Cadena-León; R. Cervantes-Bustamante; E. Montijo-Barrios; J.A. Ramírez-Mayans;

A comparison of endoscopic procedures performed at a tertiary care hospital before and during the SARS-CoV-2 pandemic F.E. Zárate-Mondragón; M. Esparza-Aguilar; J.F. Cadena-León; K.R. Ignorosa-Arellano; E. Montijo-Barrios; E.M. Toro-Monjaráz; R. Cervantes-Bustamante; A.G. Ayala-Germán; J.A. Ramírez-Mayans;

Foreign body ingestion and associated factors in pediatric patients at a tertiary care center L.A. Navia-López; J.F. Cadena-León; K.R. Ignorosa-Arellano; E.M. Toro-Monjaraz; F. Zárate-Mondragón; A. Loredo-Mayer; R. Cervantes-Bustamante; J.A. Ramírez-Mayans;