Queen Elizabeth Hospital, Birmingham, UK Correspondence to Mr John C. Watkinson, (Consultant Head & Neck & Thyroid Surgeon), Queen Elizabeth Hospital, University of Birmingham NHS Trust, Edgbaston, Birmingham, UK Tel: +44 (0)121 697 8371; fax: +44 (0)121 697 8371 e-mail: [email protected]
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John Watkinson (2004) studied this question.
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