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Citation |
Ryan JM, Perez-Avila C. Br. Med. J. BMJ 1997; 315(7112): 886. |
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Copyright |
(Copyright © 1997, BMJ Publishing Group) |
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DOI |
unavailable |
PMID |
9353529 |
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PMCID |
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Abstract |
[Abstract unavailable] Language: en |