Is airway closure caused by a liquid film instability?

Davis, 1975, Assessment of closure of lung units based on the pressure-volume curve, J. Physiol. (London), 252, 30 Frazer, 1979, A model of the gas trapping mechanism in excised lungs, 9, 482 Frazer, 1979, Meniscus formation in airways of excised rat lungs, Respir. Physiol., 36, 121, 10.1016/0034-5687(79)90019-7 Fredberg, 1978, Mechanical response of the lungs at high frequencies, J. Biomech. Eng., 100, 57, 10.1115/1.3426193 Glaister, 1973, Bulk elastic properties of excised lungs and the effect of a transpulmonary pressure gradient, Respir. Physiol., 17, 347, 10.1016/0034-5687(73)90009-1 Glaister, 1973, Transpulmonary pressure gradient and ventilation distribution in excised lungs, Respir. Physiol., 17, 365, 10.1016/0034-5687(73)90010-8 Goren, 1962, The instability of an annular thread of fluid, J. Fluid Mech., 12, 309, 10.1017/S002211206200021X Hammond, 1983, Nonlinear adjustment of a thin annular film of viscous liquid surrounding a thread of another within a circular cylindrical pipe, J. Fluid Mech., 137, 363, 10.1017/S0022112083002451 Hughes, 1970, Site of airway closure in excised dog lungs: histologic demonstration, J. Appl. Physiol., 29, 340, 10.1152/jappl.1970.29.3.340 Lai Fook, 1978, Effect of parenchymal shear modulus and lung volume on bronchial pressure-diameter behavior, J. Appl. Physiol.: Respir. Environ. Exercise Physiol., 44, 859, 10.1152/jappl.1978.44.6.859 Macklem, 1970, The stability of peripheral airways, Respir. Physiol., 8, 191, 10.1016/0034-5687(70)90015-0 Macklem, 1971, Airway obstruction and collateral ventilation, Physiol. Rev., 51, 368, 10.1152/physrev.1971.51.2.368