Can you name five people (living or dead) who greatly contributed to public health?

Margaret Chan, 

Vikram Patel

Francis S. Collins

Arunachalam Muruganantham

Tom Frieden

dr. khan operated on abdul’s left knee, he required a signature from abdul’s orthopedist confirming that the knee required the operation. the orthopedist’s written approval is a form of

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.