Article History
Received: 18 October 2019
Accepted: 14 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: JBF is the Chief Science Officer for Aerogen Pharma Corp and discloses relationships with Dance Biopharm. The companies had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results. All other authors declare that they have no competing interests.