Willem Johan Kolff

Dutch medical researcher.

Born February 14th, 1911 in Leiden. [ref]

Died February 11th, 2009 at 97 years old in Delaware County. [ref]

Occupations
internist, inventor, physician, rescue of Jews during the Holocaust, resistance fighter, university teacher
Wikipedia
Willem_Johan_Kolff

Anything I’ve done that was ultimately worthwhile initially scared me to death. Betty Bender