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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Information Relating to Property, Plant and Equipment) (Details)
12 Months Ended
Dec. 31, 2020
Buildings [Member] | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 20
Buildings [Member] | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life P50Y
Medical equipment [Member] | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 5
Medical equipment [Member] | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life P20Y
Electronic and office equipment [Member] | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful life 3
Electronic and office equipment [Member] | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life P5Y
Motor vehicles [Member]  
Property, Plant and Equipment [Line Items]  
Estimated useful life P5Y
Leasehold improvement and building improvement [Member] | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful life P5Y