You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["HealthCareActivity", "InjuryOrPoisoning", "BodySubstance", "IntellectualProduct", "AnatomicalStructure", "SpatialConcept", "Chemical", "Bacterium", "MedicalDevice", "Organization", "BiomedicalOccupationOrDiscipline", "Finding", "BiologicFunction", "Virus", "ResearchActivity", "ClinicalAttribute", "PopulationGroup", "Eukaryote", "BodySystem", "Food", "ProfessionalOrOccupationalGroup"].

Please return the output as a JSON object of the format: {"Virus": ["HIV", ...], "Bacterium": ["MRSA", ...], "AnatomicalStructure": ["Lung", ...], "BodySystem": ["CNS", ...], "BodySubstance": ["Serum", ...], "Finding": ["Headache", ...], "InjuryOrPoisoning": ["Fracture", ...], "BiologicFunction": ["Death", ...], "HealthCareActivity": ["Biopsy", ...], "ResearchActivity": ["Clinical trial", ...], "MedicalDevice": ["Lenses", ...], "SpatialConcept": ["Camps", ...], "BiomedicalOccupationOrDiscipline": ["Forensic medicine", ...], "Organization": ["WHO", ...], "ProfessionalOrOccupationalGroup": ["Provider", ...], "PopulationGroup": ["Swimmers", ...], "Chemical": ["Gold", ...], "Food": ["Rice", ...], "IntellectualProduct": ["RPAM", ...], "ClinicalAttribute": ["Biomarker", ...], "Eukaryote": ["Dogs", ...]}. 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:

Obstructive Acute Pancreatitis Secondary to PEG Tube Migration Percutaneous gastrostomy is a well-established method of providing enteral nutrition to patients incapable of oral intake, or for whom oral intake is insufficient to meet metabolic needs. In comparison to total parenteral nutrition, enteral feeding is advantageous in that it helps maintain gut mucosal integrity, which decreases the risk of bacterial translocation through the gastrointestinal tract. Complications include bleeding, aspiration, internal organ injury, perforation, periostomal leaks, tube dislodgement, and occlusion. Acute pancreatitis secondary to percutaneous gastrostomy tube migration is rare. We present a patient with acute obstructive pancreatitis secondary to percutaneous gastrostomy tube migration.
{"AnatomicalStructure": ["gut", "mucosal"], "Bacterium": [], "BiologicFunction": ["perforation", "bleeding", "occlusion", "Acute pancreatitis", "aspiration", "bacterial translocation", "Complications", "periostomal leaks", "Acute Pancreatitis", "pancreatitis"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": ["gastrointestinal tract"], "Chemical": [], "ClinicalAttribute": [], "Eukaryote": [], "Finding": ["Migration", "migration"], "Food": [], "HealthCareActivity": ["enteral nutrition", "total parenteral nutrition", "enteral feeding", "Percutaneous gastrostomy"], "InjuryOrPoisoning": ["internal organ injury", "tube dislodgement"], "IntellectualProduct": [], "MedicalDevice": ["PEG Tube", "percutaneous gastrostomy tube"], "Organization": [], "PopulationGroup": [], "ProfessionalOrOccupationalGroup": [], "ResearchActivity": [], "SpatialConcept": [], "Virus": []}