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SEGMENT REPORTING (Narrative) (Details)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]    
Concentration Risk, Percentage 10.00%  
Changhai Hospital [Member] | Sales Revenue, Net [Member]    
Segment Reporting Information [Line Items]    
Concentration Risk, Percentage   12.50%