Original: In 1983 , French scholar George Wellers was one of the first to use German data on deportations to estimate the number killed at Auschwitz , arriving at 1.613 million dead , including 1.44 million Jews and 146,000 Catholic Poles .
Simplified: In 1983 , French scholar George Wellers was one of the first to use Nazi data on deportations to estimate the number killed at Auschwitz .