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Q34412876-8C93872B-50C8-4A7F-A8AE-149BF29E15FE
Q34412876-8C93872B-50C8-4A7F-A8AE-149BF29E15FE
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Statement
http://www.wikidata.org/entity/statement/Q34412876-8C93872B-50C8-4A7F-A8AE-149BF29E15FE
Ethnographic strategies in the tracking and retention of street-recruited community-based samples of substance using hidden populations in longitudinal studies.
P2860
Q34412876-8C93872B-50C8-4A7F-A8AE-149BF29E15FE
BestRank
Statement
http://www.wikidata.org/entity/statement/Q34412876-8C93872B-50C8-4A7F-A8AE-149BF29E15FE
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type
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Statement
wasDerivedFrom
5535ea48a1e774a5ac63a9756faed4283c2692d8
P2860
Systematic review identifies number of strategies important for retaining study participants.