Alan Oliver Frazier killed a doctor, wounded another on Tuesday
                                
                                
                                    (Newser) -
                                    A gunman who complained he had a botched 2010 surgery left a suicide note outlining plans for his attack before targeting physicians in a deadly rampage at a medical office that  left one doctor dead  and another critically wounded, police said yesterday. Alan Oliver Frazier of Plumas County, Calif., a...