A Framework for Providing Virtual Cardiac Rehabilitation Services in Response to COVID-19: Frontline Experience from Johns Hopkins Cardiac Rehabilitation Centers - Francoise A. Marvel, MD; Lena Mathews, MD; Kerry J. Stewart, EdD; Ashley Broderick; Drew Landgren; Thomas Burke; Alexandra Bush; Alexander Chudnovsky, MD; Preeti Benjamin; Lochan Shah; Yumin Gao; Rongzi Shan; et al. (Elsevier, 2020)