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Other long-term liabilities (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CNY (¥)
Other long-term liabilities      
Accrued unrecognized tax benefits & surcharge ¥ 74,728 $ 11,452 ¥ 102,740
Lease deposit received from hospital 1,998 306 1,998
Other long-term liabilities ¥ 76,726 $ 11,758 ¥ 104,738