text: <unk><unk><unk>  for<unk>  artery disease first began in 1977, as a valuable mode of<unk> , wherein at the point of<unk>  stenosis a catheter-borne balloon is inflated to relieve the stenosis.
option_0: Chronic stable angina revascularization percutaneous coronary intervention
option_1: Chronic stable angina treatment calcium channel blockers
option_2: Chronic stable angina treatment aspirin
option_3: Chronic stable angina treatment dipyridamole
option_4: Chronic stable angina revascularization drug eluting stents
option_5: Chronic stable angina treatment anti-lipid agents
option_6: Chronic stable angina treatment beta blockers
option_7: Chronic stable angina treatment diabetes control