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
- 24 January 2003
- journal article
- research article
- Published by Elsevier BV in Drug and Alcohol Dependence
- Vol. 69 (1), 73-85
- https://doi.org/10.1016/s0376-8716(02)00252-1