Yonsei Medical Journal was first published in 1960. It was initially published once a year but became a biannual journal in 1968, a quarterly journal in 1986, and then a bimonthly journal in 1995.Since Yonsei Medical Journal (YMJ) became the first Korean journal indexed in Index Medicus in 1962, YMJ has been indexed/tracked/covered by MEDLINE, PubMed, PubMed Central, Science Citation Index Expanded (SCIE), SCOPUS, Embase, Chemical Abstracts Service (CAS), KoreaMed, Synapse, KoMCI, CrossRef and Google Scholar.