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Trends in HIV risk behaviour and methadone dosage among HIV-negative drug users: an ecological study |
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| Authors: | Langendam M W van Brussel G H Coutinho R A van Ameijden E J |
| Affiliation: | Division of Public Health and Environment, Municipal Health Service, Amsterdam, The Netherlands. |
| Abstract: | |
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| 本文献已被 PubMed 等数据库收录！ | |