Task-Specific Transformer-Based Language Models in Health Care: Scoping Review - Ha Na Cho; Tae Joon Jun; Young-Hak Kim; Heejun Kang; Imjin Ahn; Hansle Gwon; Yunha Kim; Jiahn Seo; Heejung Choi; Minkyoung Kim; Jiye Han; Gaeun Kee; et al. (JMIR Medical Informatics)