TY - GEN AU - Wackers,Frans J Th TI - George A. Beller, MD (Born 1940) SN - 1532-6551 PY - 2021///0830 KW - Cardiology KW - history KW - Exercise Test KW - Heart KW - diagnostic imaging KW - History, 20th Century KW - History, 21st Century KW - Humans KW - Myocardial Infarction KW - diagnosis KW - Myocardium KW - pathology KW - Software KW - Thallium Radioisotopes KW - Universities KW - Virginia N1 - Publication Type: Historical Article; Journal Article UR - https://doi.org/10.1007/s12350-020-02115-2 ER -