2679928 ESSD European Society for Swallowing Disorders 5 2679932 ESSD ecosystem service supply-demand 4 2679933 ESSD endoscopic subserosal dissection 4 2679922 ESSD extended SSD 2 2679931 ESSD ecosystem service supply-demand relationship 1 2679929 ESSD Effective source-surface distances 1 2679930 ESSD Emergency Services Sleep Diary 1 2679927 ESSD ES surgery duration 1