In 2004, he was appointed full professor and head of the department of clinical pharmacology at the Medical University of Vienna.

Müller has published some 200 research papers, in outlets such as the New England Journal of Medicine.

Müller wrote in his introduction that the Code constitutes one of the most important milestones in the history of medicine, providing for the first time a proper framework for research on human subjects.

Sadly, this milestone was not a voluntary, precautionary measure resulting from enlightened humanity, it only came into existence in the aftermath of dreadful Nazi atrocities.

Following its conception, the Nuremberg Code bore rich fruit in multiple legal regards, becoming a cornerstone of clinical research and bioethics.