00447nam a22001337a 4500001001300000003000400013005001700017008004100034245011400075580005400189650001800243700002500261700002700286D0001J000149DOH20210312130810.0210312b           ||||| |||| 00| 0 eng d00aResults of radical mastoidectomy in the Philippine General Hospital /cNathaniel W. Yang, Charlotte M. Chiong  aActa Medica Philippina, 1999 35 (3 & 4) pages 1-5 2aMastoidectomy1 aYang, Nathaniel  W. 1 aChiong, Charlotte  M.