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. 2022 Aug 1;9:898225. doi: 10.3389/fcvm.2022.898225

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Copyright © 2022 Adhikari, Dhakal, Adhikari, Parajuli, Subedi, Aryal, Thapa and Shah.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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PRISMA chart of screening and included studies. *Gray literature search includes Shahid Gangalal National Heart Center (2), Mrigendra Samjhana Medical Trust (MSMT) (1), National Health Research Council (2), Ministry of Health and Population, Dept. of Health Services (3), Others (3), and Citation search (2).