TY - JOUR T1 - Searching for Trial Protocols: a comparison of methods JO - Research Synthesis Methods UR - https://eprints.whiterose.ac.uk/id/eprint/122891 UR - https://doi.org/10.1002/jrsm.1281 PY - 2017/11/22 AU - Sutton AJ AU - Galvan De La Cruz MC AU - Leaviss J AU - Booth A ED - DO - DOI: 10.1002/jrsm.1281 PB - Wiley VL - 9 IS - 4 SP - 551 EP - 560 Y2 - 2025/10/31 ER -