Burnout syndrome in paediatricians working in paediatric emergency care settings. Prevalence and associated factors: a multilevel analysis Arístides Rivas-García; María Concepción Míguez-Navarro; Clara Ferrero-García-Loygorri; Rafael Marañón; Paula Vázquez-López;

Correlation between optic nerve sheath diameter and extracorporeal life support time Jorge Rivas-Rangel; Maricela García-Arellano; Juan M. Marquez-Romero;