Clinical characteristics and mortality risk factors in patients aged less than 18 years with COVID-19 in Mexico and Mexico City Rosa María Wong-Chew; Daniel Ernesto Noyola; Antonio Rafael Villa;

Increasing trend in patients with life-limiting and complex chronic conditions Javier Ochoa-Brezmes; Pablo del Villar Guerra; Jesús Andrés de Llano; Jesús Manuel Marugán de Miguelsanz;

Trends in hospitalization for urinary tract infection in the paediatric age group in the 2000¿2015 period in Spain Jesús Redondo Sánchez; Alberto Manuel Domínguez Lázaro; Ricardo Rodríguez Barrientos; Jaime Barrio Cortes; Andrea Seoane Sanz; Juan Bravo Acuna; Isabel del Cura-González;