Metered-Dose Liquid Nitrogen Cryospray for Chronic Bronchitis: Results From the Prospective, Sham-Controlled Trial (SPRAY-CB).

Criner GJ, Browning RF, Abu-Hijleh M, Yoneda KY, Strange C, Wahidi MM, Seaman JC, Krishna G, Cumbo-Nacheli G, Sachdeva A, Sue R, Bansal S, Gildea TR, Ghattas C, Ferguson JS, Feller-Kopman D, Kurman JS, Shah PL