Doctor who helped sell ketamine to actor Matthew Perry before his overdose death avoids prison time  CTV NewsMark Chavez is second doctor sentenced in Matthew Perry overdose death  BBCDoctor who helped sell ketamine to Matthew Perry avoids prison time  The GuardianFormer California doctor is sentenced in Matthew Perry’s overdose death  NBC NewsDoctor sentenced to 8 months home confinement in connection with Matthew Perry’s ketamine death  ABC News