Opinion paper Patient portals and health apps: Pitfalls, promises, and what one might learn from the other Jessica L. Baldwina,b,n, Hardeep Singha,b, Dean F. Sittigc, Traber Davis Giardinaa,b a Houston Veterans Affairs Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center, Houston, TX, USA b Section of Health Services Research, Department of Medicine ....