TY - JOUR T1 - An audit of sample sizes for pilot and feasibility trials being undertaken in the United Kingdom registered in the United Kingdom Clinical Research Network database. JO - BMC Med Res Methodol UR - http://eprints.whiterose.ac.uk/83449/ PY - 2013/01/01 AU - Billingham SAM AU - Whitehead AL AU - Julious SA ED - DO - DOI: 10.1186/1471-2288-13-104 VL - 13 SP - 104 Y2 - 2024/10/19 ER -