Digitally Based Blood Pressure Self-Monitoring Program That Promotes Hypertension Self-Management and Health Education Among Patients With Low-Income: Usability Study oleh Jacqueline Yareli Poblete, Natalie Lauren Vawter, Sydney Virginia Lewis, Earl Marc Felisme, Paloma Adriana Mohn, Jennifer Shea, Adam William Northrup, Jie Liu, Tala Al-Rousan, Job Gideon Godino