Smart hospital infrastructure: geomagnetic in-hospital medical worker tracking. - Keiko Yamashita; Shintaro Oyama; Tomohiro Otani; Satoshi Yamashita; Taiki Furukawa; Daisuke Kobayashi; Kikue Sato; Aki Sugano; Chiaki Funada; Kensaku Mori; Naoki Ishiguro; Yoshimune Shiratori (J. Am. Medical Informatics Assoc., 2021)