Preparation and In vitro Evaluation of FDM 3D-Printed Ellipsoid-Shaped Gastric Floating Tablets with Low Infill Percentages. - Chen D; Xu XY; Li R; Zang GA; Zhang Y; Wang MR; Xiong MF; Xu JR; Wang T; Fu H; Hu Q; Wu B; et al. (AAPS PharmSciTech, 2019)