Received: 4 November 2020
Accepted: 6 November 2020
First Online: 18 December 2020
Ethics approval and consent to participate
: The study protocol of BASIC was approved by the Institutional Review Board (METC 2010_335#B201112). Written informed consent was obtained from all patients or their next of kin, before study entry.
: Not applicable.
: The authors declare that they have no competing interest.