Nested case-control studies.
Sedgwick
Philip
P
Centre for Medical and Healthcare Education, St George's, University of London, London. p.sedgwick@sgul.ac.uk
D002121:Calcium Channel Blockers / Q000009:adverse effects*; D016022:Case-Control Studies; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D013405:Suicide
D002121:Calcium Channel Blockers