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:

Symptomatic paroxysmal AF who had at least one AF episode electrocardiographically documented within one (1) year prior to enrollment. Documentation may include electrocardiogram (ECG); Transtelephonic monitoring (TTM), Holter monitor or telemetry strip
Failed at least one antiarrhythmic drug (AAD) (Class I or III antiarrhythmic drugs) as evidenced by recurrent symptomatic AF, or intolerable to the AAD
Age 18 years or older
Signed Patient Informed Consent Form (ICF)
Able and willing to comply with all pre-, post-, and follow-up testing and requirements
{"Condition": ["AF episode", "recurrent symptomatic AF", "AAD", "paroxysmal AF", "intolerable"], "Device": [], "Drug": ["III antiarrhythmic drugs", "lass I ntiarrhythmic drugs)", "antiarrhythmic drug (AAD)"], "Measurement": [], "Mood": [], "Multiplier": ["at least one"], "Negation": [], "Observation": [], "Person": ["Age"], "Procedure": ["Holter monitor", "telemetry strip", "electrocardiographically", "electrocardiogram (ECG)", "Transtelephonic monitoring (TTM)"], "Qualifier": ["Symptomatic", "electrocardiographically documented"], "ReferencePoint": ["enrollment"], "Scope": ["Class I or III antiarrhythmic drugs"], "Temporal": ["within one (1) year prior to enrollment"], "Value": ["18 years or older"], "Visit": []}