After Mengele cut out his kidney with no anaesthetic, Yitzhak screamed and begged for death to stop the suffering.
Mengele then sent him back to work without painkillers.
Also, poor Yitzhak had to spend the whole night in a bath of ice-cold water because Mengele wanted to "test" his lung function. Jews are immune to hypothermia.
Altogether, Ganon says he spent six and a half months being nursed back to health in the hospital...at the Auschwitz "death camp."
He says his mother and five siblings were sent to the gas chambers.
Yitzhak was later slated to go to the gas chambers, but was the 201st man and the gas chamber was full after 200. A miracle!
Article: "Why One Auschwitz Survivor Avoided Doctors for 65 Years"
Note: use http://www.archive.org/ to find article if original link no longer works