| Literature DB >> 1973810 |
A Grenfell, A Rudenski, M Watts, C Wiltshire, J L Day, I P Gray.
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Year: 1990 PMID： 1973810 DOI： 10.1016/0140-6736(90)91789-d
Source DB: PubMed Journal: Lancet ISSN： 0140-6736 Impact factor: 79.321