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:

Diagnosis of sleep disordered breathing or obstructive sleep apnea
Children undergoing elective tonsillectomy or adenotonsillectomy at Children's Healthcare of Atlanta Egleston location
Parent or legal guardian willing to participate, and able to understand and sign the provided informed consent
{"Condition": ["obstructive sleep apnea", "sleep disordered breathing"], "Device": [], "Drug": [], "Measurement": [], "Mood": [], "Multiplier": [], "Negation": [], "Observation": [], "Person": ["Children"], "Procedure": ["adenotonsillectomy", "tonsillectomy"], "Qualifier": ["elective"], "ReferencePoint": [], "Scope": ["tonsillectomy or adenotonsillectomy"], "Temporal": [], "Value": [], "Visit": ["Children\u0027s Healthcare of Atlanta Egleston"]}