First Do No Harm
Head to Hippokrates's clinic in Argos. It's in the northeastern part of the city. Upon arrival, a cutscene will play between Hippokrates's assistant Sostratos and Chrysis. Once Chrysis is finished, gather information from Sostratos. He will ask you to run an errand for him.
Head southeast of the city toward the cliffs. Follow the paths to find them and head toward the top to the Cave of Pan. Hippokrates will be surrounded by people...and uh...has a soft spot for his bald spot.'
A conversation will begin with Hippokrates will begin. In order to help the player, he needs some notes he lost to save a patient. Gather some information from him about where the notes could be, and also about the Priests. The mission will be complete after this conversation.