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Serum ECP as a diagnostic marker for asthma in children less than 5 years: A systematic review and meta‐analysis

Currently, there are no clear‐cut clinical or laboratory parameters to diagnose asthma in young children. Spirometry or the lung function tests cannot be reliably measured in children less than 5 years. The purpose of this study is to evaluate the efficacy of serum eosinophilic cationic protein (sECP) in diagnosing asthma among children less than 5 years of age.