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Professional
Consumer
MERCK MANUAL
Consumer Version
HEALTH TOPICS
HEALTHY LIVING
SYMPTOMS
EMERGENCIES
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ABOUT US
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About the Merck Manuals
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Authors
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alan g. cheng
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Alan G. Cheng, MD
Affiliations
Sewall Professor in Otolaryngology
Stanford University
Manual Chapters and Commentaries
Chapters
Mouth and Throat Disorders