TY - JOUR T1 - Consultants' forum: should post hoc sample size calculations be done? JO - Pharm Stat PY - 2009/04/01 AU - Walters SJ ED - DO - DOI: 10.1002/pst.334 VL - 8 IS - 2 SP - 163 EP - 169 Y2 - 2024/12/22 ER -