John A. Clark

Mortality among injecting drug users: a critical reappraisal.

Martin Frischer, Michael Bloor, David Goldberg et al. · Journal of Epidemiology & Community Health · 1993 · 116 citations · Full text

Medicine, Pharmacology, Pharmacovigilance +12

Lichen Sclerosus et Atrophicus in Children

John A. Clark · Archives of Dermatology · 1967 · 61 citations

Medicine, Dermatology, Pediatrics +6

A Follow Up Study of Schizophrenia and Depression in Young Adults

John A. Clark, B. L. Mallett · The British Journal of Psychiatry · 1963 · 57 citations

Medicine, Psychiatry, Psychology +15

Profiling gut microbiota and bile acid metabolism in critically ill children

Iain Kean, Joseph E. Wagner, Anisha Wijeyesekera et al. · Scientific Reports · 2022 · 23 citations · Full text

Life Sciences, Microbiology, Medical Microbiology +15

The Prognosis in Drug Addiction

John A. Clark · Journal of Mental Science · 1962 · 21 citations

Life Sciences, Psychiatry, Clinical Medicine +7