Executive Summary: Clinical Practice Guidelines on the Management of Resistant Tuberculosis of the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR) and the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC) Adrian Sanchez-Montalva; José Antonio Caminero; Mª Remedio Guna; Teresa Rodrígo Sanz; Ramón Rabuñal; Joan Pau Millet; José Antonio Gullón-Blanco; Luis Anibarro; Guillermo Perez-Mendoza; Juan Francisco Medina; Verónica González-Galán; Eva Tabernero;

Development and Validation of the OSA-CPAP Perceived Competence Evaluation Interview David Rudilla; Laura Galiana; Pedro Landete; Enrique Zamora; Inés Vergara; Amparo Oliver; Ana Román; Julio Ancochea;

Prevalence and 30-Day Mortality in Hospitalized Patients With Covid-19 and Prior Lung Diseases Jaime Signes-Costa; Iván J. Núñez-Gil; Joan B. Soriano; Ramón Arroyo-Espliguero; Charbel Maroun Eid; Rodolfo Romero; Aitor Uribarri; Inmaculada Fernández-Rozas; Marcos García Aguado; Víctor Manuel Becerra-Muñoz; Jia Huang; Martino Pepe; Enrico Cerrato; Sergio Raposeiras; Adelina Gonzalez; Francisco Franco-Leon; Lin Wang; Emilio Alfonso; Fabrizio Ugo; Juan Fortunato García-Prieto; Gisela Feltes; Mohammad Abumayyaleh; Carolina Espejo-Paeres; Jorge Jativa; Alvaro López Masjuan; Carlos Macaya; Juan A. Carbonell Asíns; Vicente Estrada;