title: [Extended electrocardiographic observation and evaluation of anti-arrhythmia agents].
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D005117:Cardiac Complexes, Premature / Q000188:drug therapy; D004562:Electrocardiography; D006801:Humans
chemical_list: D000889:Anti-Arrhythmia Agents