A handful of letters released this week by medical groups illustrate how divided physicians are over healthcare overhaul legislation, the Wall Street Journal reports. The American Medical Association, for example, sent a letter to Senate Majority Leader Harry Reid saying it supports part, though not all, of the legislation. Nineteen surgical groups, including neurosurgeons, anesthesiologists and gynecologists, wrote to Reid this week saying they flatly oppose the Senate health bill, the Journal reports.