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: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. 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:

High-dose methylprednisolone may do more harm for spinal cord injury. Because of the National Acute Spinal Cord Injury Studies (NASCIS), high-dose methylprednisolone became the standard of care for the acute spinal cord injury. In the NASCIS, there was no mention regarding the possibility of acute corticosteroid myopathy that high-dose methylprednisolone may cause. The dosage of methylprednisolone recommended by the NASCIS 3 is the highest dose of steroids ever being used during a 2-day period for any clinical condition. We hypothesize that it may cause some damage to the muscle of spinal cord injury patients. Further, steroid myopathy recovers naturally and the neurological improvement shown in the NASCIS may be just a recording of this natural motor recovery from the steroid myopathy, instead of any protection that methylprednisolone offers to the spinal cord injury. To our knowledge, this is the first discussion considering the possibility that the methylprednisolone recommended by NASCIS may cause acute corticosteroid myopathy.
{"Chemical": ["steroid", "corticosteroid", "methylprednisolone", "steroids"], "Disease": ["myopathy", "spinal cord injury", "damage to the muscle", "Spinal Cord Injury"]}