Who is Moshe Offer from Children of the Flames: Dr. Josef Mengele and the Untold Story of the Twins of Auschwitz and what is their importance?

Born in Hungary, Moshe Offer was taken to Auschwitz at the age of twelve. His twin, Tibi, became one of Megele's favorite guinea pigs, and he suffered through numerous operations before dying after Mengele castrated him. Moshe survived the camp and later married, only to lose his wife to a heart disease. He later spent months in a hospital that was opened especially to help Holocaust victims with the aftermath of the war.