Application of a machine learning model for early prediction of in-hospital cardiac arrests: Retrospective observational cohort study L. Socias Crespí; L. Gutiérrez Madroñal; M. Fiorella Sarubbo; M. Borges-Sa; A. Serrano García; D. López Ramos; C. Pruenza Garcia-Hinojosa; E. Martin Garijo;