Temporal Events Detector for Pregnancy Care (TED-PC): A Rule-based Algorithm to Infer Gestational Age and Delivery Date from Electronic Health Records of Pregnant Women with and without COVID-19. - Tianchu Lyu; Chen Liang; Jihong Liu; Berry Campbell; Peiyin Hung; Yi-Wen Shih; Nadia Ghumman; Xiaoming Li (AMIA, 2022)