Use of Guideline-Directed Medical Therapy in Patients Aged ≥ 65 Years After the Diagnosis of Heart Failure: A Canadian Population-Based Study oleh Muizz Wahid, MD, Vivian Aghanya, BSc, Nariman Sepehrvand, MD, PhD, Douglas C. Dover, PhD, Padma Kaul, PhD, Justin Ezekowitz, MBBCh, MSc