Leonidas, a Greek physician who was a native of Alexandria

Alexandria

Alexandria is the second-largest city of Egypt, with a population of 4.1 million, extending about along the coast of the Mediterranean Sea in the north central part of the country; it is also the largest city lying directly on the Mediterranean coast. It is Egypt's largest seaport, serving...

, and belonged to the sect of the Episynthetici

Eclectic school

The Eclectic school of medicine was an ancient school of medicine in ancient Greece and Rome. They were so-called because they selected from each sect the opinions which seemed to them most probable. They seemed to have been a branch of the Methodic school. They were founded, it would seem by...

. As he is quoted by Caelius Aurelianus

Caelius Aurelianus

Caelius Aurelianus of Sicca in Numidia was a Roman physician and writer on medical topics. He is best known for his translation from Greek to Latin of a work by Soranus of Ephesus, On Acute and Chronic Diseases. He probably flourished in the 5th century, although some place him two or even three...

, and himself quotes Galen

Galen

Aelius Galenus or Claudius Galenus , better known as Galen of Pergamon , was a prominent Roman physician, surgeon and philosopher...

, he probably lived in the 2nd and 3rd centuries. Of his writings, which appear to have been chiefly related to surgical subjects, nothing now remains but some fragments preserved by Aëtius

Aëtius Amidenus

Aëtius of Amida was a Byzantine physician and medical writer, particularly distinguished by the extent of his erudition. Historians are not agreed about his exact date...

 and Paul of Aegina

Paul of Aegina

Paul of Aegina or Paulus Aegineta was a 7th-century Byzantine Greek physician best known for writing the medical encyclopedia Medical Compendium in Seven Books...

, from which we may judge that he was a skillful practictioner.