2633226 EFSI early femoral stump ischaemia 1 2633227 EFSI elbow flexion strength index 1 2633224 EFSI electrical and fire safety inspection initiative 1 2633225 EFSI electrical-fluid-structure interaction 1 2633230 EFSI Electro-Filtering Paper Spray Ionization 1 2633228 EFSI Environmental Footprint Single Index 1 2633229 EFSI excessive fatigue symptom inventory 1