Psychometric evaluation of the Symptoms of Infection with Coronavirus-19 (SIC): results from a cross-sectional study and a phase 3 clinical trial oleh Eric K.H. Chan, Valerie Williams, Carla Romano, Sheri Fehnel, Ashley F. Slagle, Jeffrey Stoddard, Jerald Sadoff, Margaret Mayorga, Sandy Lewis, Stuart Yarr, Jia Ma, Yan Liu, Eva G. Katz, Pauline McNulty, Ilse van Dromme, Kelly McQuarrie