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Professional
Consumer
MSD Manual
Professional Version
MEDICAL TOPICS
RESOURCES
COMMENTARY
PROCEDURES
QUIZZES
ABOUT US
MEDICAL TOPICS
RESOURCES
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Authors
Jerry L. Spivak, MD, MACP
Specialities and Expertise
Hematology
Affiliations
Emeritus Professor of Medicine
Johns Hopkins University School of Medicine
Certifications
Internal Medicine;Hematology