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What does it take to retain substance-abusing adolescents in research protocols? Delineation of effort required, strategies undertaken, costs incurred, and 6-month post-treatment differences by retention difficulty
Kathleen Meyers, Alicia Webb, Jeanne Frantz, Mary RandallVolume:
69
Year:
2003
Language:
english
DOI:
10.1016/s0376-8716(02)00252-1
File:
PDF, 161 KB
english, 2003