J Am Coll Cardiol. 1993 Feb;21(2):549. doi: 10.1016/0735-1097(93)90702-3.
Journal of the American College of Cardiology
W W Parmley
PMID: 8426024 DOI: 10.1016/0735-1097(93)90702-3 Free Article
[No abstract available.]