Most doctors who use the new drug-eluting stents for the treatment of long coronary narrowings tend to cover the full length of the lesion with long or multiple stents. The investigators hypothesized that a policy of spot-stenting, i.e., stenting of only the very tight parts of the coronary narrowing, might result in better outcomes by means of avoiding multiple stents that have been associated with significant complications such as late stent thrombosis.