academic article

• Recommendations on Evidence Needed to Support Measurement Equivalence between Electronic and Paper-Based Patient-Reported Outcome (PRO) Measures: ISPOR ePRO Good Research Practices Task Force Report.  Value in Health.  2009
• Recommendations on evidence needed to support measurement equivalence between electronic and paper-based patient-reported outcome (PRO) measures: ISPOR ePRO Good Research Practices Task Force report..  Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research.  12:419-29. 2008