@misc{indiciaeff34d94b9a99, title = {The patient judgment system: reliability and validity.}, author = {E C Nelson and R D Hays and C Larson and P B Batalden}, year = {1989}, doi = {10.1016/s0097-5990(16)30290-1}, url = {https://pubmed.ncbi.nlm.nih.gov/2502749/}, note = {Source identifier: 2502749} }