| Literature DB >> 10562884 |
C M Wong1, S Ma, A J Hedley, T H Lam.
Abstract
Mesh:
Substances:
Year: 1999 PMID: 10562884 PMCID: PMC1756963 DOI: 10.1136/jech.53.9.580
Source DB: PubMed Journal: J Epidemiol Community Health ISSN: 0143-005X Impact factor: 3.710