| Literature DB >> 8490455 |
M L Malbrain, A Wauters, I Demeyer, P Demedts, H Verbraeken, R Daelemans, H Neels.
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Year: 1993 PMID: 8490455 PMCID: PMC1677467 DOI: 10.1136/bmj.306.6883.1002
Source DB: PubMed Journal: BMJ ISSN: 0959-8138