Received: 5 July 2019
Accepted: 20 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Institutional Review Board (IRB) of Medical Teaching Institute (MTI), Lady Reading Hospital (LRH), Peshawar, Khyber Pakhtunkhwa, Pakistan vide reference number 09/1RB. Before participation written consent was taken from each participant.
: Not applicable.
: None of the authors have any competing interests.