https://www.merckmanuals.com/professional/authors/petri-william
William A. Petri, Jr, MD, PhD | Author | Merck Manual Professional Edition
Nov 30, 2025 - Learn about William A. Petri, Jr — qualifications, affiliations, and the chapters and topics the author has contributed to the Merck Manual Professional...
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https://www.merckmanuals.com/professional/authors/marie-chelsea
Chelsea Marie, PhD | Author | Merck Manual Professional Edition
Dec 14, 2025 - Learn about Chelsea Marie — qualifications, affiliations, and the chapters and topics the author has contributed to the Merck Manual Professional Edition.
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https://www.merckvetmanual.com/authors/abuelo-angel
Angel Abuelo, DVM, PhD, DABVP, DECBHM, FHEA, MRCVS | Author | Merck Veterinary Manual
Dec 10, 2025 - Learn about Angel Abuelo — qualifications, affiliations, and the chapters and topics the author has contributed to the Merck Veterinary Manual.
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