TY - JOUR AN - 14 AU - Hawthorne,G. TI - The effect of different methods of collecting data: mail, telephone and filter data collection issues in utility measurement. JO - Qual Life Res PY - 2003 VL - 12 SP - 1081-1088 M2 - 1081 DO - 10.1023/A:1026103511161 ER -