TY - JOUR T1 - Practical guide to sample size calculations: an introduction JO - Pharmaceutical Statistics UR - http://eprints.whiterose.ac.uk/97115/ PY - 2015/11/20 AU - Flight L AU - Julious SA ED - DO - DOI: 10.1002/pst.1709 PB - Wiley VL - 15 IS - 1 SP - 68 EP - 74 Y2 - 2025/04/08 ER -