1. Intensive Care Unit, AC Camargo Cancer Center, São Paulo 01509-011, Brazil
2. Intensive Care Unit, Physical Therapy Department, AC Camargo Cancer Center, São Paulo 01509-011, Brazil
3. Pulmonary Division, Faculdade de Medicina da Universidade de São Paulo, São Paulo 05403-000, Brazil
4. Sírio-Libanês Teaching and Research Institute, Hospital Sírio Libanês, São Paulo 01308-060, Brazil