A doctor walks through a hallway at the Centro Medico trauma center in San Juan, Puerto Rico, Tuesday, April 16, 2013. A medical exodus is taking place in the Caribbean territory as doctors and nurses flee for the U.S. mainland, seeking higher salaries and better reimbursements from insurers. Many of their patients, frustrated by long waits and a scarcity of specialists, are finding they have no other choice but to follow them off the island. (AP Photo/Ricardo Arduengo)SAN JUAN, Puerto Rico (AP) — Going to the physician in Puerto Rico has for years incessantly meant entering into line. Now, it might mean getting on a aircraft.