TY - JOUR T1 - Defining usual care comparators when designing pragmatic trials of complex health interventions: a methodology review. JO - Trials PY - 2024/02/12 AU - Turner K AU - Huntley A AU - Yardley T AU - Dawson S AU - Dawson S ED - DO - DOI: 10.1186/s13063-024-07956-7 PB - BMC VL - 25 IS - 117 Y2 - 2025/07/27 ER -