Steinhubl, S., Sun, J., Vijayakrishnan, R., Byrd, R., Daar, Z., Gotz, D., . . . Stewart, W. (2013). A3-2: The Signs and Symptoms of Heart Failure are Frequently Documented to Wax and Wane in the Years Prior to a Clinical Diagnosis of Heart Failure: Data from 4,644 Patients Followed in Primary Care. Marshfield Clinic.

Steinhubl, Steven, Jimeng Sun, Rajakrishnan Vijayakrishnan, Roy Byrd, Zahra Daar, David Gotz, Shahram Ebadollahi, and Walter Stewart. A3-2: The Signs and Symptoms of Heart Failure Are Frequently Documented to Wax and Wane in the Years Prior to a Clinical Diagnosis of Heart Failure: Data From 4,644 Patients Followed in Primary Care. Marshfield Clinic, 2013.

Steinhubl, Steven, et al. A3-2: The Signs and Symptoms of Heart Failure Are Frequently Documented to Wax and Wane in the Years Prior to a Clinical Diagnosis of Heart Failure: Data From 4,644 Patients Followed in Primary Care. Marshfield Clinic, 2013.