Identification of Patients With Congestive Heart Failure From the Electronic Health Records of Two Hospitals: Retrospective Study - Daniel Sumsion; Elijah Davis; Marta Fernandes; Ruoqi Wei; Rebecca Milde; Jet Malou Veltink; Wan-Yee Kong; Yiwen Xiong; Samvrit Rao; Tara Westover; Lydia Petersen; Niels Turley; et al. (JMIR Medical Informatics)