Bob (Patient): I am retired -- I used to work in construction but can’t anymore because of my breathing issues. I live alone in an apartment in Boston. In the last 2 weeks, I have had a few doctor's appointments and had to go to the pharmacy to pick up medications a few times, as well as go to the grocery store. I used to smoke cigarettes and smoked 2 packs of cigarettes a day for 35 years, but I quit 10 years ago. I do not drink alcohol or use other drugs.