Deitmer T
Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde der Univ. Münster.
Pneumologie. 1990 Oct;44(10):1138-40.
The method of viable cytological sampling from respiratory mucosa is detailed including the technique of measuring the ciliary beat frequency. Some studies using this tool are mentioned to exemplify its usefulness.