Danish Registry study of 1.9 million chronic pain pts, shows chronic use of medicinal cannabis (5391) is assoc w/ a significant risk of new-onset arrhythmia {180d RR 2.07; 1-year RR 1.36). No significant association for acute coronary syndrome https://t.co/VT3X8lVWaD https://t.co/BMqVapFkuU