Effects of hyperoxia and helium-hyperoxia on the cardiocirculatory responses to incremental exercise in hypoxaemic patients with advanced COPD
Marcos Nunes, Fernando Queiroga-Jr., Ethiane Meda, Gaspar Chiappa, Maria-Christina Machado, Luiz Eduardo Nery, J. Alberto Neder
European Respiratory Journal 2011 38: 1711; DOI: