(1)
Romano, S.; Salvaggio, A.; Hirata, R. P.; Lo Bue, A.; Picciolo, S.; Oliveira, L. V. F. de; Insalaco, G. Upper Airway Collapsibility Evaluated by a Negative Expiratory Pressure Test in Severe Obstructive Sleep Apnea . Clinics 2011, 66 (4), 567-572. https://doi.org/10.1590/S1807-59322011000400008.