Intrarater and interrater reliability of the Clinical Frailty Scale-Es and FRAIL-Es in critically ill patients Susana Arias-Rivera; María Mar Sánchez-Sánchez; Raquel Jareño-Collado; Marta Raurell-Torredà; Lorena Oteiza-López; Sonia López-Cuenca; Israel John Thuissard-Vasallo; Fernando Frutos-Vivar;

Analysis of frailty as a prognostic factor independent of age: A prospective observational study Rosario Molina Lobo; Federico Gordo Vidal; Lola Prieto López; Inés Torrejón Pérez; Antonio Naharro Abellán; Irene Salinas Gabiña; Beatriz Lobo Valbuena;

Frailty in severe COVID-19 survivors after ICU admission. A prospective and multicenter study in Mexico Oscar Peñuelas; Manuel Lomelí; Laura del Campo-Albendea; Sara I. Toledo; Alfredo Arellano; Uriel Chavarría; Maria Carmen Marín; Karina Rosas; María Alacíen Galván Merlos; Roberto Mercado; Héctor R. García-Lerma; Enrique Monares; Daira González; Juan Pérez; Andrés Esteban-Fernández; Alfonso Muriel; Fernando Frutos-Vivar; Andrés Esteban;