You will be shown inclusion or exclusion criteria for a clinical trial. Given these criteria, your task is to extract all unique entities of the following types: ["Observation", "Condition", "Procedure", "Drug", "Temporal", "Multiplier", "Qualifier", "Negation", "ReferencePoint", "Scope", "Value", "Mood", "Device", "Visit", "Measurement", "Person"].

Please return the output as a JSON object of the format: {"Condition" : ["breast cancer", ...], "Device" : ["ports", ...], "Drug" : ["Atenolol", ...], "Measurement" : ["blood pressure", ...], "Mood" : ["suspected", ...], "Multiplier" : ["more than two", ...], "Negation" : ["no", ...], "Observation" : ["history", ...], "Person" : ["male", ...], "Procedure" : ["surgery", ...], "Qualifier" : ["severe", ...], "ReferencePoint" : ["enrollment", ...], "Scope" : ["infection", ...], "Temporal" : ["one day", ...], "Value" : ["50%", ...], "Visit" : ["ICU", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

over 18 years 
successful angioplasty (residual stenosis < 30%) on a significant stenosis (maximal systolic speed 3 times > from basal maximal systolic speed, stenosis > 70% on angiography) on the venous-prosthesis anastomosis or on the venous segment 5 cm after the anastomosis of a prosthetic haemodialysis vascular access (at least 1 month old) 
social security affiliation 
signed informed consent
{"Condition": ["stenosis"], "Device": [], "Drug": [], "Measurement": ["stenosis", "maximal systolic speed", "residual stenosis"], "Mood": [], "Multiplier": [], "Negation": [], "Observation": ["social security affiliation", "signed informed consent"], "Person": ["over 18 years"], "Procedure": ["on the venous-prosthesis anastomosis angioplasty", "angiography", "on the venous segment 5 cm after the anastomosis angioplasty"], "Qualifier": ["successful", "significant"], "ReferencePoint": [], "Scope": ["maximal systolic speed 3 times \u003e from basal maximal systolic speed, stenosis \u003e 70% on angiography"], "Temporal": [], "Value": ["\u003e 70%", "over 18 years", "\u003c 30%", "3 times \u003e from basal"], "Visit": []}