TY - JOUR T1 - Correction to: Choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial 鈥� the development of the DELTA2 guidance JO - Trials PY - 2019/12/01 AU - Sones W AU - Julious SA AU - Rothwell JC AU - Ramsay CR AU - Hampson LV AU - Emsley R AU - Walters SJ AU - Hewitt C AU - Bland M AU - Fergusson DA AU - Berlin JA et al ED - DO - DOI: 10.1186/s13063-019-3809-2 PB - Springer Science and Business Media LLC VL - 20 IS - 1 Y2 - 2025/06/20 ER -