TY - JOUR T1 - Clinical trials: the challenge of recruitment and retention of participants JO - Journal of Clinical Nursing UR - https://doi.org/10.1111/j.1365-2702.2009.03041.x PY - 2009/12/17 AU - Gul RB AU - Ali PA ED - DO - DOI: 10.1111/j.1365-2702.2009.03041.x PB - Wiley VL - 19 IS - 1-2 SP - 227 EP - 233 Y2 - 2025/11/03 ER -