Intrapulmonary shunt and alveolar dead space in a cohort of patients with acute COVID-19 pneumonitis and early recovery.

"Conflict of interest: A. Malhotra has received grants from the National Institutes of Health, and consulting fees for medical education from Livanova, Equilium, Corvus and Jazz. P.D. Wagner has received consulting fees from SMS Biotechnology and Third Pole Inc., and has participated on the data safety monitoring board on Dr Levine's (UT Southwestern, Dallas, TX, USA) PPG. P. Harbut received an unconditional loan of the equipment used in this study from the Djurgården Hockey Club, Stockholm. No other author has a conflict of interest to declare."

"Conflict of interest: A. Malhotra has received grants from the National Institutes of Health, and consulting fees for medical education from Livanova, Equilium, Corvus and Jazz. P.D. Wagner has received consulting fees from SMS Biotechnology and Third Pole Inc., and has participated on the data safety monitoring board on Dr Levine's (UT Southwestern, Dallas, TX, USA) PPG. P. Harbut received an unconditional loan of the equipment used in this study from the Djurgården Hockey Club, Stockholm. No other author has a conflict of interest to declare. Support statement: We would like to thank Djurgården IF Hockey in Stockholm, Sweden for the loan of the equipment used in this study and Vyaire Medical Pty Ltd for data collection software support. A. Malhotra is funded by the National Institutes of Health."