Response to letter regarding article, "Randomized trial of acupuncture to lower blood pressure" [2] - Flachskampf, Frank A.; Wortmann, Alois; Klinghammer, Lutz; Daniel, Werner; Gallasch, Joachim; Pflederer, Wolfgang; Gefeller, Olaf; Pfahlberg, Annette Bettina; Gan, Junxue; Mao, Juntong (Circulation, 2008)