Additive manufacturing of hydrogel-based materials for next-generation implantable medical devices. - Yukkee Cheung Poh; Anne-Céline Kohler; Jocelyn T. Compton; Lauren L. Hsu; Kathryn M. Lau; Sohyun Kim; Benjamin W. Lee; Francis Y. Lee; Samuel K. Sia (Sci. Robotics, 2017)