https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013111997&signature=683011aa2bb6ac3471f2219da1568ead&articleTitle=Voice+Disorders+and+their+Management&articleAuthor=Margaret+Fawcus&publicationTitle=Voice+Disorders+and+their+Management&language=&publicationType=1&publishYear=1991&isn=9780412364808&publisher=Springer+US