title: Letter: Long-term coronary sinus pacing.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000628:therapy*; D003331:Coronary Vessels; D005069:Evaluation Studies as Topic; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000379:methods*; D013997:Time Factors