The forgotten Korotkoff phases: how often are phases II and III Present, and how do they relate to the other Korotkoff phases?
O'Sullivan J, Allen J, Murray A. The forgotten Korotkoff phases: how often are phases II and III Present, and how do they relate to the other Korotkoff phases? Am J Hypertens. 2002 Mar; 15(3):264-8.