PubMed includes more than 23 million citations of MEDLINE biomedical literature, life science journals, and online books. Citations may include links to full-text materials from PubMed Central and publisher websites.

PUBMED – A Database created and supported by the National Library of Medicine NLM, and National Institutes of Health. In PUBMED, we may find medical information from 1940 to date. It includes databases such as: AIDS / Bioethics / Cancer / Complementary Medicine / Medline / History of Medicine / Nursing Journals /

The Centers for Disease Control and Prevention Government of the United States of America provide the main channel for online communication. Every year, this site receives about 500 million visits, with an average of 41 million page-views per month, and provides users with reliable health information about:

• Diseases and conditions
• Emergencies and disasters
• Environmental health
• Healthy lifestyle
• Injuries, violence and safety
• Stages of life and Populations
• Safety at Work and in Healthcare

The executive authority and healthcare coordinator within the United Nations system oversees addressing global health issues, setting the health research agenda, establishing norms and standards, coordinating evidence-based policy options, providing technical support to countries and monitoring trends in global health.

Biblioteca Virtual en Salud (Virtual Health Library, BVS, in Spanish) was established in 1998 as a model, a strategy and an operational platform for technical cooperation of the Pan American Health Organization (PAHO) for information and healthcare knowledge management in Latin America and the Caribbean (LAC).

BioMed Central is a British scientific publisher specialized in open access publications on science, technology and medicine topics. Their articles are original research products. BioMed Central is owned by Springer Nature.

Non-profit organization that brings together a group of health science researchers with more than 11,500 volunteers in more than 90 countries, who perform a rigorous and systematic process for reviewing health interventions.

Medicine based on evidence: it contains systematic reviews, protocols and information to help in diagnostic and therapeutic decision-making.

Free access database including specialized books on health sciences. It currently offers 365 books.

Bioline is an international partnership between the University of Toronto Libraries, the Reference Center on Environmental Information, based in Brazil, for technical infrastructure and Bioline UK as a liaison. It offers access to academic journals on the health area published by developing countries in Africa, Asia and South America.

It is a non-profit organization of scientists and physicians interested in freely disseminating medical and scientific literature from around the world, published by the Public Library of Science under a Creative Commons Attribution 2.5 Generic license.

A network of Scientific Journals of Latin America and the Caribbean, Spain and Portugal. It is project promoted by the Autonomous University of Mexico State (UAEM), for contributing to the dissemination of scientific publishing activities occurring inside and about Latin America.

Virtual library for Latin America, the Caribbean, Spain and Portugal. It provides full access to a collection of scientific journals from the different countries that are linked to this project

International public health organization with 105 years of experience, dedicated to improving healthcare and living conditions of people in the American continent. Internationally recognized as part of the United Nations System, it acts as the Regional Office of the World Health Organization in the Americas.

Dedicated to the promotion of free access to medical journals in full text through the Internet. It is possible to access scientific medical journals classified by: - ​​Medical specialty - Title - Languages: English, French, German, Spanish, Portuguese and other languages ​​- New journals. It currently offers access to 2,827 magazines. Some of them require a subscription to access the most recent articles

Epistemonikos is a multilingual collaborative database on health data-evidence. It is the largest source of systematic reviews relevant to health decision-making, and a wide source of other types of scientific evidence.