TY - BOOK AU - Gomez,Angel Joaquin M. AU - Cruz,MaConcepcion L. AU - Banson,Grace Anne A. TI - Comparison of closed and semi-closed anesthesia systems using isoflurane for mastoidectomy cases in the Philippine General Hospital KW - Anesthesia KW - Anesthesia, Inhalation KW - Isoflurane KW - Mastoidectomy ER -