Lab Tests Online offers noncommercial patient education on blood, urine, and other lab tests to help health care consumers better manage their care.

The ABG Site is dedicated to helping nurses and other healthcare professionals to understand and interpret arterial blood gases.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library. It collects materials in all major areas of the health sciences and to a lesser degree in such areas as chemistry, physics, botany and zoology. The collections stand at 5 million items--books, journals, technical reports, manuscripts, microfilms, photographs and images. Housed within the Library is one of the world's finest medical history collections of old (pre-1914) and rare medical texts, manuscripts, and incunabula.

Indian Journal of Critical Care Medicine is an peer-reviewed biomedical periodical of ISCCM.

The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert commentary, and medical review.

Family Practice Notebook is a library containing the following 31 books: Cardiovascular Medicine, Gynecology, Hematology and Oncology, Human Immunodeficiency Virus, Infectious Disease, Jokes, Pathology and Laboratory Medicine, Pulmonology, Practice Management, Neurology, Neonatology, Dentistry, Obstetrics, Orthopedics, Pediatrics, Pharmacology, Prevention, Mental Health, Radiology, Nephrology, Rheumatology, Sports Medicine, Dermatology, Surgery, Urology, Endocrinology, Otolaryngology, Emergency Medicine, Ophthalmology, Geriatric Medicine, Gastroenterology.