Needs assessment can identify scores on HRQOL questionnaires that represent problems for patients: an illustration with the Supportive Care Needs Survey and the QLQ-C30 - Snyder, C F; Blackford, A L; Brahmer, J R; Carducci, M A; Pili, R; Stearns, V; Wolff, A C; Dy, S M; Wu, A W (Qual Life Res, 2010)