population-based incidence of pulmonary nontuberculous mycobacterial disease in oregon 2007 to 2012. | pulmonary nontuberculous mycobacteria (ntm) disease is a chronic, nonreportable illness, making it difficult to monitor. although recent studies suggest an increasing prevalence of ntm disease in the united states, the incidence and temporal trends are unknown. | 2015 | 25692495 |