Cost input data of model.

Footnotes: The original currency was CNY and has been converted to USD using exchange rate in 2010 (100 US = 677 CNY). We only included the cost that was reimbursed by the health insurance, and did not include the proportion that was paid by parents. The estimated reimbursement rate from the survey was 19.25% for children. Therefore, the health care system paid $2.17 per outpatient case and $54.67 per inpatient case.