目的了解复治病人形成原因。
Objective Finding out the causing reasons of retreated patients.
结论：必须加强对复治病人和外地病人的管理和治疗。
Conclusion: the management and treatment must be strengthen for retreatment and nonlocal patient groups.
结论：必须加强对复治病人和外地病人的管理和治疗。
Conclusion: the management and treatment must be strengthen for retreatment and nonlocal patient groups.
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