Using fractional exhaled nitric oxide to guide step-down treatment decisions in asthma: practical considerations
Wang K., Verbakel JY., Oke J., Fleming-Nouri A., Harada N., Atsuta R., Fujisawa T., Kawayama T., Inoue H., Lazarus S., Szefler S., Martinez FD., Shaw D., Pavord ID., Thomas M.