Various networks including the National Library of Medicine syndicate this product. The next two sites contain full textbooks. The Merck Manual-Home edition and The Complete Home Medical Guide are written for the health consumer. They contain general discussions and descriptions of health and disease topics. Common problems are likely to be found here, but rare illnesses or complications may not be covered.
Books offer an overview of topics.
The other two Merck manuals contain more technical text, but they are well-respected sourcebooks on diseases. The Merck Manual on Diagnosis and Therapy progresses from symptoms to disease concepts. The human anatomy sites help localize the body organ or system involved in the question. Knowing where the liver is, or which bone is the femur helps to visualize how the body is affected by the problem. The visual depiction differentiates the body and its parts.