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Coronary artery disease varies seasonably in subtropics

BMJ 1999; 319 doi: (Published 09 October 1999) Cite this as: BMJ 1999;319:1004
  1. CM Wong, assistant professor,
  2. S Ma, research fellow,
  3. TH Lam, professor,
  4. AJ Hedley, professor and head
  1. Department of Community Medicine, University of Hong Kong, Hong Kong, China

    EDITOR—Seto et al's findings of seasonal variation in mortality from coronary artery disease in Hawaii1 are similar to our own findings in Hong Kong, a subtropical city.

    Hong Kong has 6.2 million people residing and working in an urban and suburban area of about 1070 km2. In summer and autumn (May-October) the temperature is warm (mean 27°C; range 22-30°C); in winter and spring (November-April) it is an average of 8°C cooler (19°C; 7-27°C).

    As a single disease …

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