《魏书·列传·卷九》
是当时的上等医生，这之前，请假回盗厘，等到召唤到来，亘赵领他到另外处所，哭泣流泪握着手而对他说： 您是当今时代的元化，皇帝气力疲乏危险，希望您竭尽心力，专心致志治疗。
徐謇，当世之上医也。先是，假还洛阳，及召至，勰引之别所，泣涕执手而谓之曰： 君今世元化，至尊气力危惙，愿君竭心，专思方治。
He is a top doctor at the time. Before this, he was on leave and returned to steal. When the summons came, Cheng Zhao took him to another place, weeping and holding his hand and saying to him: You are a metaplasia of the present era, and the emperor's energy is weak and dangerous. I hope you will do your best to concentrate on the treatment.