Fig. 3From: The impacts of Chinese drug volume-based procurement policy on the use of policy-related antibiotic drugs in Shenzhen, 2018–2019: an interrupted time-series analysisTrends of monthly drug purchase volume and expenditures for Cefuroxime Axetil and its Alternatives. (a) Volume (thousand DDDs); (b) Expenditures (thousand RMB)Back to article page