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(Color online) Maximum magnitude of the out-of-plane vorticity component as a function of the subglottal pressure. The solid line marks the linear regression fit to the data. The ranges for PSG varied between 10.0 to 18.8 cm H2O for the low, 18.5 to 22.8 cm H2O for the medium, and 21.5 to 27.5 cm H2O for the high.
