One of the papers that cites Tai's:
http://www.lexjansen.com/wuss/2004/posters/c_post_the_sas_calculations_.pdf
It includes a formula Tai 'invented' (quotes in the paper) and acknowledges that it is the trapezoid rule. I can't find Tai's full paper of course, but this article shows that Tai frighteningly might have been serious about his discovery, but also that at least some MDs took calculus.
Slashdot Mirror
One of the papers that cites Tai's: http://www.lexjansen.com/wuss/2004/posters/c_post_the_sas_calculations_.pdf It includes a formula Tai 'invented' (quotes in the paper) and acknowledges that it is the trapezoid rule. I can't find Tai's full paper of course, but this article shows that Tai frighteningly might have been serious about his discovery, but also that at least some MDs took calculus.