Arrhythmias References Wolff, Parkinson, and White. Bundle-Branch Block with Short P-R Interval in Healthy Young People Prone to Paroxysmal Tachycardia, 1930. [PDF] Share this: Print (Opens in new window) Print Email a link to a friend (Opens in new window) Email Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like this:Like Loading...