Sean Coughlin is Research Fellow at the Collaborative Research Centre SFB 980 Episteme in Bewegung funded by the German Research Foundation (DFG) and at the Institute for Classical Philology, Humboldt-Universität zu Berlin. He publishes articles on Ancient Greek and Roman philosophy, science and medicine, and is currently completing an edition, with translation and commentary, of the fragments of Athenaeus of Attalia. David Leith is Senior Lecturer in Classics at the University of Exeter. He has published variously on the Hellenistic and Roman medical sects, especially Herophilus, Erasistratus, Asclepiades and the Methodists, and has edited medical fragments for The Oxyrhynchus Papyri series. He is currently preparing an edition, with essays and commentary, of the testimonia on Asclepiades of Bithynia. Orly Lewis is Senior Lecturer in Classics at The Hebrew University of Jerusalem and Principal Investigator of the ERC-funded project ATLOMY – Anatomy in Ancient Greece and Rome: An Interactive Visual and Textual Atlas. She has published on ancient anatomy, physiology and diagnosis and the relation between theory and practice in ancient scientific method. She is currently preparing a study of the diagnostic theory and method of Archigenes of Apamea.