Doctor pleads guilty in death of 'Friends' star Matthew Perry ReutersDoctor charged in connection with Matthew Perry’s death pleads guilty to conspiracy to distribute ketamine CNNMatthew Perry death: Doctor pleads guilty in actor's ketamine overdose BBC.comDoctor Charged in Matthew Perry Death Case Pleads Guilty to Ketamine Distribution Charge PEOPLEDoctor charged in Matthew Perry case pleads guilty to drug offense ABC News