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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2019 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥)
--- | --- | --- | ---
Long-term Purchase Commitment [Line Items] |  |  |
Unrecognized tax positions | $ 14,758 | ¥ 102,740 |
Capital Addition Purchase Commitments [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Commitments to Acquire Certain Medical Equipment | $ 89,429 | ¥ 622,584 | ¥ 660,758

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