title: Clinical epidemiology: what, why and how?
authors.affiliation: Department of Ophthalmology, King George's Medical College, Lucknow.
authors.forename: R
authors.initials: R
authors.lastname: Nath
authors.forename: R C
authors.initials: RC
authors.lastname: Ahuja
authors.forename: S
authors.initials: S
authors.lastname: Kumar
mesh_terms: D004812:Epidemiologic Methods; D005128:Eye Diseases / Q000453:epidemiology*; D006801:Humans