Josef Kure, DPhil, Head of the Department of Medical Ethics at Masaryk University (Czech Republic), in his 2011 chapter "Good Death Within Its Historical Context and as a Contemporary Challenge: A Philosophical Clarification of the Concept of Euthanasia" from the book, Euthanasia - The 'Good Death' Controversy in Humans and Animals, wrote:

“The Hippocratic tradition, whose core is the Hippocratic Oath, prohibits the killing of a human being, just as it forbids any aid in suicide (in present-day terminology in ‘physician assisted suicide’): ‘To please no one will I prescribe a deadly drug nor give advice which may cause his death.’ Euthanasia as a direct killing of the patient, regardless if upon his/her request or without any request, is not forbidden by the Hippocratic Oath directly. But such a prohibition can be deduced, a fortiori [with greater reason or more convincing force], from the prohibition of any help in suicide. So euthanasia as the killing of a patient by the physician is not in accordance with either the Hippocratic Oath or the spirit of the Hippocratic tradition.”