Josephine Norquist

Guidelines for Inclusion of Patient-Reported Outcomes in Clinical Trial Protocols: The SPIRIT-PRO Extension

Joanna Coast, Heather Draper, Andrew Bottomley, 2018, JAMA.

Cross-cultural evaluation of the Parkinson's Disease Questionnaire: tests of data quality, score reliability, response rate, and scaling assumptions in the United States, Canada, Japan, Italy, and Spain.

Ray Fitzpatrick, Crispin Jenkinson, R. Fitzpatrick, 2003, Journal of clinical epidemiology.