Received: 27 November 2019
Accepted: 5 May 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: Not applicable (in vitro phantom experiment study) This 3D printing technique used a retrospective computed tomography gastrography (CTG) data of human for reference only. This study was approved by CHA Bundang Medical Center Institutional Review Board (No. CHAMC 2019–08-025).
: Not applicable.
: YS and JH are research workers at Gluck, and MI and GBK are research workers at Anymedi Inc., which are developing 3D printing products related to the research being reported. CIK, DHK, TJS, WSP, JJH and SJ have no conflicts of interest or financial ties to disclose. Also, there is no competing interest between the medical doctors and two business parties involved in this study.