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:

Primary Management and Outcome - Open Laryngotracheal Trauma Acute external injury to the larynx is both life threatening and a potential long term management challenge. As Otorhinolaryngologist we must be prepared and well versed to manage these patients. In our study seven patients of open laryngeal traumas were managed by primary closure. In five patients nature of injury was known in other two patients exact nature of injury was not known. After primary closure five patients with known injury survived and two patients with unknown injury died. As per our experience, we recommend primary closure, if the exact nature of injury is known as the outcome is definitely favourable.
{"AnatomicalStructure": ["larynx"], "Bacterium": [], "BiologicFunction": ["died"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": [], "Chemical": [], "ClinicalAttribute": [], "Eukaryote": [], "Finding": ["experience", "life threatening", "favourable"], "Food": [], "HealthCareActivity": ["Management", "primary closure"], "InjuryOrPoisoning": ["open laryngeal traumas", "nature of injury", "injury", "Open Laryngotracheal Trauma"], "IntellectualProduct": [], "MedicalDevice": [], "Organization": [], "PopulationGroup": [], "ProfessionalOrOccupationalGroup": ["Otorhinolaryngologist"], "ResearchActivity": [], "SpatialConcept": [], "Virus": []}