| Literature DB >> 1359306 |
A Normann, J Graff, A Gerritzen, H H Brackmann, B Flehmig.
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Year: 1992 PMID: 1359306 DOI: 10.1016/0140-6736(92)92938-c
Source DB: PubMed Journal: Lancet ISSN: 0140-6736 Impact factor: 79.321