The action of codeine and morphine on cardiac arrhythmias.
D001145:Arrhythmias, Cardiac; D003061:Codeine / Q000494:pharmacology*; D006801:Humans; D009020:Morphine / Q000494:pharmacology*
D009020:Morphine; D003061:Codeine
ARRHYTHMIA/experimental; CODEINE/effects; MORPHINE/effects