In 1955 he moved to Ain Shams University in Cairo as Professor of Social and Preventative Medicine .
In 1944 he succeeded Professor Percy Samuel Lelean in the Bruce and John Usher Chair in Public Health at the University of Edinburgh .
In 1955 he moved to University of Edinburgh     in Cairo as Professor of Social and Preventative Medicine .
In 1944 he succeeded Professor Percy Samuel Lelean in the Bruce and John Usher Chair in Public Health at the University of Edinburgh .