Edgerton, James R Commentary: Ptolemy versus Copernicus: The times they are a-changin'. [electronic resource] - The Journal of thoracic and cardiovascular surgery 12 2021 - 1780-1781 p. digital Publication Type: Editorial; Comment ISSN: 1097-685X Standard No.: 10.1016/j.jtcvs.2020.03.102 doi