Aresella

From wow.incgamers.com

Aresella is a level 60 First Aid Trainer located in Falcon Watch (Horde) in Hellfire Peninsula. She sells the book "Master First Aid - Doctor in the House" which teaches you advanced First Aid up to a skill level of 375. She also sells, "Manual: Netherweave Bandage" and "Manual: Heavy Netherweave Bandage". For further reading click here.