2633619 EFVs early follow-up visits 1 2633626 EFVs elementary flux vectors 1 2633620 EFVs Endogenous foamy viruses 1 2633627 EFVs endogenous FVs 1 2633624 EFVs environmentally friendly vehicles 1 2633625 EFVs epicardial fat volumes 1 2633621 EFVs Euclidean feature values 1 2633622 EFVs expelled food vacuoles 1 2633623 EFVs protozoan-expelled food vacuoles 1