“…Although the use of interactive 3D PDF files is not yet widely adopted, a recent review identified embedded 3D content in over 200 articles from a variety of disciplines, ranging from astronomy to animal and human surgery, either as a figure included within the article body or as an external reference (Newe & Becker, 2018). In those with a focus on human anatomy, presentation of interactive 3D content was largely based on surface representations of bodily structures, either alone (Kato et al, 2014;Kato, Ziegler, Utsumi, Ohno, & Takeichi, 2016;Chung, Kwon, Shin, & Chung, 2017;Chung, Chung, Shin, & Kwon, 2018;Kim et al, 2013, Kim, Chung, Park, Shin, & Park, 2015Park, Chung, Shin, Jung, & Park, 2015;Wu et al, 2017) or in combination with sectional anatomy Jang, Chung, & Shin, 2015;Reina, Lirk, Puigdellívol-S anchez, Mavar, & Prats-Galino, 2016;Shin, Kwon, et al, 2015;Shin, Shim, & Kim, 2018a, 2018bValera-Melé et al, 2018), and less commonly accompanied by additional or custom-designed graphic user controls (Reina et al, 2016;Valera-Melé et al, 2018).…”