Clinical characteristics and imaging features of patients with nontuberculous mycobacteria in a tertiary care center.

More importantly, an increasing trend of NTM disease is observed in North America (3–6% per year) [9] and Chine [10] , but not in Europe [11] .

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While there was an increasing trend of unidentified species over the years toward 2017, there was a decreasing trend to isolate the group of slowly growing mycobacteria.

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