CONCERN Factorial Design Survey (FDS) Methods Test: Using REDCap as a Survey Platform. - Jose P. Garci Jr.; Sarah A. Collins; Kenrick D. Cato; Suzanne Bakken; Haomiao Jia; Min-Jeoung Kang; Christopher Knaplund; Kumiko O. Schnock; Patricia C. Dykes (MedInfo, 2019)