Rhet gre 1356b30-32οἷον ἡ (31) ἰατρικὴ τί Σωκράτει τὸ ὑγιεινόν ἐστιν ἢ Καλλίᾳ, ἀλλὰ τί τῷ (32) τοιῷδε ἢ τοῖς τοιοῖσδε
Rhys Roberts 1924 engMedicine, for instance, does not theorize about what will help to cure Socrates or Callias, but only about what will help to cure any or all of a given class of patients:
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=record&uid=c81a7846-1d51-11e7-ba66-0050569f23b2
