| Literature DB >> 5048748 |
J A Nielsen, E H Thaysen, H Olesen, A R Nielsen.
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Year: 1972 PMID: 5048748 DOI: 10.3109/00365527209180752
Source DB: PubMed Journal: Scand J Gastroenterol ISSN: 0036-5521 Impact factor: 2.423