| Literature DB >> 7287282 |
D L O'Connell, H M Alexander, A J Dobson, D M Lloyd, G R Hardes, H J Springthorpe, S R Leeder.
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Year: 1981 PMID: 7287282 DOI: 10.1093/ije/10.3.223
Source DB: PubMed Journal: Int J Epidemiol ISSN: 0300-5771 Impact factor: 7.196