Confounding in case control studies.
Department of Community Medicine, Dr R.P. Govt. Medical College, Tanda 176 001, Kangra, Himachal Pradesh, India.
Sunil Kumar
SK
Raina
D001289:Attention Deficit Disorder with Hyperactivity / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000503:physiopathology*; D008297:Male; D011597:Psychomotor Performance