Thompson DR, Pohl JE, Sutton TW (1992). "Circadian variation in the frequency of onset of chest pain in elderly patients with acute myocardial infarction". Age and Ageing. 21 (2): 99–102. doi:10.1093/ageing/21.2.99. PMID1575099.
Thompson DR, Pohl JE, Sutton TW (1992). "Circadian variation in the frequency of onset of chest pain in elderly patients with acute myocardial infarction". Age and Ageing. 21 (2): 99–102. doi:10.1093/ageing/21.2.99. PMID1575099.