Presentation TCT 2012 Impact of Old Age on Clinical and Angiographic Characteristics of Coronary Artery Spasm as assessed by Acetylcholine Provocation test Presenter: Woong Gil Choi, Seung Woon Rha, Byoung Geol Choi, Amro Elnagar, Sung Il Im, SunWon Kim, Jin Oh Na, Seong Woo Han, Cheol Ung Choi, Hong Euy Lim, Jin Won Kim, Eung Ju Kim, Chang Gyu Park, Hong Seog Seo, Dong Joo Oh January 03, 2012