TY - JOUR T1 - Improving the validity of economic evaluations alongside controlled trials. JO - J Health Serv Res Policy PY - 1999/07/01 AU - Dixon S AU - Deverill M AU - Gannon M AU - Brazier J AU - Haggard M ED - DO - DOI: 10.1177/135581969900400307 VL - 4 IS - 3 SP - 161 EP - 163 Y2 - 2025/06/22 ER -