Epidemiology in practice: case-control studies
Community Eye Health
.
1998;11(28):57-8.
Authors
S Lewallen
1
,
P Courtright
Affiliation
1
BC Centre for Epidemiologic & International Ophthalmology, University of British Columbia, St Paul's Hospital, Vancouver V6Z 1Y6, Canada.
PMID:
17492047
PMCID:
PMC1706071
No abstract available