title: ECG of the Month. Sinus arrhythmia.
authors.affiliation: Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843-4474, USA.
authors.forename: Eryn A
authors.initials: EA
authors.lastname: Shipley
authors.forename: Ashley B
authors.initials: AB
authors.lastname: Saunders