1. Universidad de Guayaquil, Facultad de Ciencias Médicas, Guayaquil, Ecuador
2. Physiology and Respiratory-Center Briones-Claudett, Guayaquil, Ecuador
3. Intensive Care Unit, Ecuadorian Institute of Social Security (IESS), Babahoyo, Ecuador
4. Universidad Espíritu Santo, Samborondón, Ecuador
5. Pneumology Department, Ecuadorian Institute of Social Security (IESS), Guayaquil, Ecuador
6. Intensive Care Unit, Santa Maria Clinic, Guayaquil, Ecuador
7. School of Medicine, Universidad San Francisco de Quito, Quito, Ecuador
8. School for Oncology & Developmental Biology (GROW), University of Maastricht, Maastricht, Netherlands
9. Critical Care Department, Hospital de Los Valles, Quito, Ecuador