Lucato, J. J. J.; Adams, A. B.; Souza, R.; Torquato, J. A.; Carvalho, C. R. R.; Marini, J. J. Evaluating Humidity Recovery Efficiency of Currently Available Heat and Moisture Exchangers: A Respiratory System Model Study . Clinics 2009, 64 (6), 585-590. https://doi.org/10.1590/S1807-59322009000600015.