Authors: THEUNISSEN NCM VOGELS TGC KOOPMAN HM VERRIPS GHW ZWINDERMAN KAH VERLOOVEVANHORICK SP WIT JM

Citation: Ncm. Theunissen et al., THE PROXY PROBLEM - CHILD REPORT VERSUS PARENT REPORT IN HEALTH-RELATED QUALITY-OF-LIFE RESEARCH, Quality of life research, 7(5), 1998, pp. 387-397