Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc (2)

Textbook, National Academies of Sciences, Washington, USA

Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids (2)

Textbook, National Academies of Sciences, Washington, USA

Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate (2)

Textbook, Food and Nutrition Board, Institute of Medicine, The National Academies Press

Dietary Reference Intakes: Applications in Dietary Assessment (2)

Textbook, National Academies Sciences, Washington, USA

Dietary Reference Intakes: Proposed Definition of Dietary Fiber (2)

Textbook, National Academies of Sciences, Washington, USA

Dietary Supplements: A Framework for Evaluating Safety (2)

Textbook, The National Academies of Sciences, Washington, USA

Dietary Supplements: A Framework Safety (2)

Textbook, The National Academies of Sciences, Washington, USA

Digestive System Medical Illustrations (2)

Medical-Artist.com, UK

Diving Medicine (2)

F. Bove, Underwater Medicine Associates, inc., Bryn Mawr, USA

Doctors Guide (2)

 Doctor's Guide Publishing Limited

ECG Learning Center (2)

Frank G. Yanowitz, University of Utah School of Medicine, Salt Lake City, USA

ECG Library (2)

Dean Jenkins, ECG Library, ECGs by Example, 3rd Edition, Churchill Livingstone

ECG Wave-Maven (2)

Nathanson LA, McClennen S, Safran C, Goldberger AL, Harvard University, Boston, USA

Medical Professional Video Center (2)

Mayo Clinic, Mayo Foundation for Medical Education and Research, Rochester, Minnesota, USA

American Journal of Physiology - Heart and Circulatory Physiology (2)

Journal, John Wiley & Sons, Inc., Hoboken, USA 

American Journal of Physiology - Renal Physiology (2)

Journal, John Wiley & Sons, Inc., Hoboken, USA 

Arthritis and Rheumatology (2)

Journal, John Wiley & Sons, Inc., Hoboken, USA

Atlas of Gastrointestinal Endoscopy (2)

A. Freytag, University of Magdeburg, Germany

Atlas of Renal Pathology (2)

National Kidney Foundation, Inc., Columbus, USA

Cardiology 2 (2)

The Cleveland Clinic Foundation, Lyndhurst, USA