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MSD Manual

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MSD Manual
Professional Version
The trusted provider of medical information since 1899
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Professional /
Overview of the MSD Manuals /
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Larry E. Johnson /

Larry E. Johnson, MD, PhD

Affiliations
  • Associate Professor of Geriatrics and Family and Preventive Medicine
  • University of Arkansas for Medical Sciences
  • Medical Director
  • Central Arkansas Veterans Healthcare System
Manual Chapters and Commentaries

MSD and the MSD Manuals

Merck and Co., Inc., Kenilworth, NJ, USA (known as MSD outside the US and Canada) is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.  The Manual was first published in 1899 as a service to the community.  The legacy of this great resource continues as the Merck Manual in the US and Canada and the MSD Manual in the remainder of the world. Learn more about our commitment to Global Medical Knowledge.

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