- Matthew Perry’s Cause of Death Revealed as ‘Acute Effects of Ketamine’Variety
- Ketamine caused Matthew Perry’s death, doctors say. What to know about the trendy, risky treatmentNew York Post
- Matthew Perry Died of ‘Acute Effects of Ketamine,’ Autopsy SaysThe New York Times
- Matthew Perry cause of death revealed: How ‘Friends’ star diedUSA TODAY
- What is Ketamine?CBS Los Angeles