The autopsy revealed that Stan Lee had died of heart failure: TMZ

The certificate states that Stan Lee was cremated and his ashes returned to his daughter.

Regeneration, November 27, 2018.– TMZ, the US site dedicated to celebrity information, had access to the death certificate of the father of Marvel's iconic superhero, Stan Lee. This exposes the necropsy performed, leaving obvious the causes of his death.

Lee died of heart and respiratory failure. In addition to that, he would have suffered from aspiration pneumonia, a problem that usually occurs when you inhale food, stomach acid or saliva into your lungs.

The document also indicates the precise moment of his death. Monday, November 12th at 9:17 am at Cedars-Sinai Medical Center in Los Angeles.

The relapse of Stan Lee

Lee would have arrived at this health center earlier this month, when an emergency ambulance picked him up at his home in Hollywood Hills.

Remember that this past year, you face various health problems. Including vision problems and pneumonia.

The certificate states that the author and comic writer were cremated and that his ashes were returned to his daughter. His job has been cataloged as a writer in the publishing industry.