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:

Severe Iron deficiency anemia (hemoglobin < 8.0 g/dL).
Parasitic worm infection e.g. schistosomiasis, and hook worm by stool analysis.
Any cases giving clinical symptoms of gastritis e.g. nausea, vomiting, dull aching pain or soreness in the epigastrium.
Cases with history of gastric ulcer diagnosed by upper endoscopy.
Cases complaining of hematemesis.
{"Condition": ["Iron deficiency anemia", "gastric ulcer", "vomiting", "schistosomiasis", "nausea", "Parasitic worm infection", "gastritis", "hematemesis", "dull aching pain", "hook worm", "soreness in the epigastrium"], "Device": [], "Drug": [], "Measurement": ["hemoglobin"], "Mood": ["clinical symptoms"], "Multiplier": [], "Negation": [], "Observation": ["history"], "Person": [], "Procedure": ["stool analysis", "upper endoscopy"], "Qualifier": ["Severe"], "ReferencePoint": [], "Scope": ["clinical symptoms of gastritis", "hemoglobin \u003c 8.0 g/dL", "nausea, vomiting, dull aching pain or soreness in the epigastrium", "schistosomiasis, and hook worm", "Severe Iron deficiency anemia"], "Temporal": [], "Value": ["\u003c 8.0 g/dL"], "Visit": []}