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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2019 CNY (¥) ¥ / shares shares | Dec. 31, 2018 CNY (¥) ¥ / shares shares | Dec. 31, 2017 CNY (¥) ¥ / shares shares
Revenues, net of value-added tax | $ 28,493 | ¥ 198,363 | ¥ 190,898 | ¥ 330,977
Equipment leasing revenues | 8,412 | 58,559 | 76,723 | 239,569
Revenue | 20,081 | 139,804 | 114,175 | 91,408
Cost of revenues | (30,767) | (214,193) | (171,136) | (232,979)
Gross profit | (2,274) | (15,830) | 19,762 | 97,998
Operating expenses: |  |  |  |
Selling expenses | (4,344) | (30,241) | (21,718) | (43,608)
General and administrative expenses | (45,266) | (315,134) | (291,854) | (237,646)
Impairment of long-lived assets | (10,930) | (76,089) | (5,433) | (28,600)
Operating loss | (62,814) | (437,294) | (299,243) | (211,856)
Interest expense (including interest expense to related party amounting to RMB31,716, RMB193 and RMB151 (US$22) for the years ended December 31, 2017, 2018 and 2019, respectively) | (4,122) | (28,700) | (46,232) | (89,959)
Foreign exchange gain, net | 5,026 | 34,990 | 36,531 | 4,023
(Loss) gain on disposal of long-lived assets | (187) | (1,299) | 4,711 | (31,437)
Interest income | 1,316 | 9,165 | 14,168 | 12,077
Income (loss) from equity method investments | (729) | (5,078) | (20,747) | 1,454
Gain on disposal of subsidiaries | 0 | 0 | 3,341 | 58,913
Other income, net | 5,335 | 37,138 | 34,206 | 2,890
Gain on disposal of an equity method investment | 0 | 0 | 48,019 | 0
Loss before income tax | (56,175) | (391,078) | (225,246) | (253,895)
Income tax (expenses) benefit | 5,600 | 38,986 | (34,051) | (31,789)
Net loss | (50,575) | (352,092) | (259,297) | (285,684)
Net loss attributable to noncontrolling interests | (6,470) | (45,043) | (24,422) | (1,364)
Net loss attributable to Concord Medical Services Holdings Limited | $ (44,105) | ¥ (307,049) | ¥ (234,875) | ¥ (284,320)
Loss per share for Class A and Class B ordinary shares: |  |  |  |
Basic and diluted | (per share) | $ (0.61) | ¥ (4.24) | ¥ (2.76) | ¥ (2.19)
Weighted average number of class A and class B ordinary shares outstanding: |  |  |  |
Basic and diluted | 130,238,498 | 130,238,498 | 130,104,787 | 130,091,977
Other comprehensive income (loss), net of tax of nil |  |  |  |
Foreign currency translation, net tax of nil | $ (1,245) | ¥ (8,664) | ¥ (41,203) | ¥ 40,550
Total other comprehensive income (loss), net of tax | (1,245) | (8,664) | (41,203) | 40,550
Comprehensive loss | (51,820) | (360,756) | (300,500) | (245,134)
Comprehensive income (loss) attributable to noncontrolling interests | (6,310) | (43,930) | (22,902) | 2,485
Comprehensive loss attributable to Concord Medical Services Holdings Limited | (45,510) | (316,826) | (277,598) | (247,619)
Services and other revenues |  |  |  |
Revenue | 16,809 | 117,027 | 99,117 | 91,351
Medicine income |  |  |  |
Revenue | $ 3,272 | ¥ 22,777 | ¥ 15,058 | ¥ 57

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