(a) Kaplan-Meier curve for overall mid- and long-term (-axis) patency for sandwich technique cases, cohort (A), plotted against days after procedure (-axis); + indicates censored data. Censored data indicate that observational period was cut off before the occurrence of a significant event (in this case stent occlusion). (b) Kaplan-Meier curve for mid- and long-term patency according to TASC-II classification of femoropopliteal lesions treated by sandwich technique. Log rank test (). + indicates censored data. (c) Kaplan-Meier curve for mid- and long-term patency according to route of recanalization in cohort (A). Log rank test (). + indicates censored data. (d) Kaplan-Meier curve for mid- and long-term patency with or without regular aspirin in cohort (A). Log rank test (). + indicates censored data. (e) Kaplan-Meier curve for primary patency in patients with and without type II diabetes mellitus (DM). Log rank test, . + indicates censored data.