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Zhou Z, Vorperian VR, Gong Q, Zhang S, January CT (June 1999). "Block of HERG potassium channels by the antihistamine astemizole and its metabolites desmethylastemizole and norastemizole". J. Cardiovasc. Electrophysiol. 10 (6): 836—43. doi:10.1111/j.1540-8167.1999.tb00264.x. PMID10376921.