AUTHOR=Pasaribu Sahala Benny , Novitasari Dewiana , Goestjahjanti Francisca Sestri , Hendratono Tonny TITLE=The impact and challenges of digital marketing in the health care industry during the digital era and the COVID-19 pandemic JOURNAL=Frontiers in Public Health VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2022.969523 DOI=10.3389/fpubh.2022.969523 ISSN=2296-2565