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Article History

Received: 1 March 2020

Accepted: 27 July 2020

First Online: 17 August 2020

Ethics approval and consent to participate

: Not applicable.

: Not applicable.

: Dr. Dhand reports remuneration from GSK Pharmaceuticals, Boehringer-Ingelheim, Bayer, Mylan, Teva, and Astra-Zeneca Pharmaceuticals outside the submitted work. Dr. Fink is Chief Science Officer for Aerogen Pharma Corp, San Mateo, CA, USA. Dr. MacLoughlin is the Senior Manager Science for Aerogen Ltd., Galway, Ireland. Dr. Li declares to receive research funding from Fisher & Paykel Healthcare, The Daniel and Ada Rice Foundation. None of the companies had a role in the conception of this review, in the literature search or interpretation, in the writing of the manuscript, or in the decision to publish the results.