反复呼吸道感染是儿科的常见病。
Repeated respiratory infection is the common disease in paediatric clinic.
小儿反复呼吸道感染是儿童在临床上的常见病。
Repeatedly respiratory infection of children is common disease in clinic.
目的探讨反复呼吸道感染（RRI）患儿骨代谢状态。
Objective To investigate the change of bone metabolism in children with RRI.
目的探讨反复呼吸道感染（RRI）患儿骨代谢状态。
Objective To investigate the change of bone metabolism in children with RRI.
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