PT - JOURNAL ARTICLE AU - Orlando R. Pérez-Nieto AU - Eder I. Zamarron-Lopez AU - Josué L. Medina Estrada AU - Jesús Salvador Sánchez-Diaz AU - Manuel A. Guerrero-Gutiérrez AU - Diego Escarraman-Martinez AU - Raúl Soriano-Orozco TI - Reply to: Effect of prone positioning without mechanical ventilation in COVID-19 patients with acute respiratory failure AID - 10.1183/13993003.01671-2022 DP - 2022 Jan 01 TA - European Respiratory Journal PG - 2201671 4099 - http://erj.ersjournals.com/content/early/2022/09/14/13993003.01671-2022.short 4100 - http://erj.ersjournals.com/content/early/2022/09/14/13993003.01671-2022.full