TY - CHAP T1 - Some considerations concerning negative values for EQ-5D health states T2 - EQ-5D concepts and methods: A developmental history PY - 2005/01/01 AU - de Charro F AU - Busschbach J AU - Essink-Bot M-L AU - van Hout B AU - Krabbe P ED - DO - DOI: 10.1007/1-4020-3712-0_14 PB - Springer Netherlands SN - 9781402037115 SP - 171 EP - 179 Y2 - 2024/12/22 ER -