“…O 2 attributable to the ENDS (Baker and Behm, 1999;Case et al, 1998;Chinevere et al, 1999), even when the study was designed to increase the chances of detecting any benefits by separately analyzing participants who were considered to be responders (O'Kroy, 2000;West et al, 1998). O 2 attributable to the ENDS (Baker and Behm, 1999;Case et al, 1998;Chinevere et al, 1999), even when the study was designed to increase the chances of detecting any benefits by separately analyzing participants who were considered to be responders (O'Kroy, 2000;West et al, 1998).…”