Davis KH, Su J, Gonzalez JM, Trudeau JT, Nelson LM, Hauber B, Hollis KA. Quantifying the importance of inhaler attributes corresponding to items in the patient satisfaction and preference questionnaire in patients using Combivent Respimat. Health Qual Life Outcomes. 2017 Oct 16;15(1):201. doi: 10.1186/s12955-017-0780-z
Schwab P, Dhamane AD, Hopson SD, Moretz C, Annavarapu S, Burslem K, Renda A, Kaila S. Impact of comorbid conditions in COPD patients on health care resource utilization and costs in a predominantly Medicare population. Int J Chron Obstruct Pulmon Dis. 2017 Feb 23;12:735-44. doi: 10.2147/COPD.S112256
Dhamane AD, Schwab P, Hopson S, Moretz C, Annavarapu S, Burslem K, Renda A, Kaila S. Association between adherence to medications for COPD and medications for other chronic conditions in COPD patients. Int J Chron Obstruct Pulmon Dis. 2016 Dec 22;12:115-22. doi: 10.2147/COPD.S114802