Preface to the publication of the Chinese Version of the WHO Guidelines for Hearing Aids and Services for Developing Countries( 2~nd Edition)in the January 2005 issue of the Journal of Audiology and Speech Pathology

Preface to the publication of the Chinese Version of the WHO Guidelines for Hearing Aids and Services for Developing Countries( 2~(nd) Edition)in the January 2005 issue of the Journal of Audiology and Speech Pathology