Received: 18 November 2020
Accepted: 1 February 2021
First Online: 10 February 2021
Ethics approval and consent to participate
: The study was registered (CTRI/2014/02/004393) and local IRB approved the use of the database for this study and waived the need for informed consent.
: All authors agreed for publication of this study.
: Pr. Tissieres reports research grants from Merieux Foundation and Chiesi Inc, outside the submitted work, and consulting fee for Baxter, Bristol Myers Squibb, bioMerieux, Faron, Chiesi. All other authors declare that they have no conflict of interest.