Related Clues:
- Doc bloc, for short
- Sawbones' gp.
- Fitness-advocating org.
- Health standards org. since 1847
- Dylan's ''I ___ Lonesome Hobo''
- Research org.
- G.P.s' gp.
- Simon & Garfunkel's ''I ___ Rock''
- Physicians org.
- Drs.' org. since 1847
- Org. for life savers
- Physicians' org.
- Practicing grp.
- Org. for a G.P.
- Doc's bloc