This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
The standard definition of public health was given by 
Select and explain. 
A. Winslow, B. Virchow, C. Shattuck, D. Chadwick
A: Winslow
Answer: A: Winslow 
Explanation: Chadwick worked on great cholera epidemic of 1932 and published " The sanitary conditions of the labouring population in Great Britan"Jon Snow studied the epidemic of choleraShattuck published a book on health conditions in Massachusetts.Winslow defined public health as" the science and a of preventing disease, prolonging life and promoting health and efficiency through organised community effo.Park 23e pg:9