Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of incorrect techniques between a routine visit and 1 month after correct use of controller devices in 69 COPD patients (138 devices).
Abbreviations: COPD, chronic obstructive pulmonary disease; pMDI, pressurized meter-dose inhaler; NA, not applicable to the device.
