BARROS, MARCELO CARDOSO; HOCHHEGGER, BRUNO ; ALTMAYER, STEPHAN ; WATTE, GUILHERME ; ZANON, MATHEUS ; SARTORI, ANA PAULA ; CAVALET BLANCO, DANIELA ; PACINI, GABRIEL SARTORI ; CHATKIN, JOSE MIGUEL . Quantitative computed tomography phenotypes, spirometric parameters, and episodes of exacerbation in heavy smokers: An analysis from South America. PLoS One, v. 13, p. e0205273, 2018.