TY - JOUR AU - Torrance, G W TI - Measurement of health state utilities for economic appraisal JO - J Health Econ VL - 5 PY - 1986 DO - 10.1016/0167-6296(86)90020-2 L3 - PubMed-ID: 10311607 SP - 1 EP - 30 ER -