Electrocardiographic Characteristics, Identification, and Management of Frequent Premature Ventricular Contractions. - Tsiachris D; Botis M; Doundoulakis I; Bartsioka LI; Tsioufis P; Kordalis A; Antoniou CK; Tsioufis K; Gatzoulis KA (Diagnostics (Basel, Switzerland), 2023)