American Academy of Pain Medicine
http://www.painmed.org/

American Society of Anesthesiologists: ASA
http://www.asahq.org

American Society of Critical Care Anesthesiologists
http://www.gasnet.org/societies/ascca/index.html

American Society of Regional Anesthesia and Pain Medicine
http://www.asra.com

Anesthetic Research Society
http://www.ars.ac.uk/

Anesthesia Foundation
http://www.anesthesiafoundation.org/

Asociación de Anestesistas de Gran Bretaña e Irlanda
http://www.aagbi.org

Association of Burns and Reconstructive Anaesthetists
http://www.abra.org.uk/

Association for Cardiothoracic Anaesthetists
http://www.acta.org.uk/

Australian Society of Anaesthetists
http://www.asa.org.au/

Canadian Anesthesiologists’ Society
http://www.cas.ca/

Confederación Latinoamericana de Sociedades de Anestesiología
http://www.clasa-anestesia.org

European Society of Anesthesiologists ESA.
http://www.euroanesthesia.org

European Society of Intravenous Anaesthesia
http://www.eurosiva.org/

Foundation for Anesthesia Education and Research
http://faer.org/home.php

Foundation for European Education in Anaesthesiology
http://www.univ-lille2.fr/feea/

International Anesthesia Research Society
http://www.iars.org/default/default.asp

International Trauma Anesthesia and Critical Care Society
http://www.itaccs.com/

Society of Cardiovascular Anesthesiologists
http://www.scahq.org

Society for Obstetric Anesthesia and Perinatology
http://www.soap.org/default.htm

Society for Pediatric Anesthesia
http://www.pedsanesthesia.org/

Society of Neurological Anesthesia & Critical Care
http://www.snacc.org/

Sociedad Anestesiología de Chile
http://www.socanestesia.cl

Societat Catalana d’ Anestesiologia, Reanimació i Terapéutica del Dolor
http://www.scartd.org

Sociedad Española de Anestesiologia, Reanimación y Terapéutica del Dolor
http://www.sedar.es

Sociedad Española del Dolor ( SED)
http://www.sedolor.es

The American Board of Anesthesiology
http://home.theaba.org/index.asp

UK Society for Intravenous Anaesthesia
http://www.sivauk.org/

World Anesthesia Society
http://www.world-anaesthesia.org/links.html

Sección española de la Sociedad Europea de Anestesia Regional
http://www.esra-spain.org

Instituto Mediterráneo de Anestesia Regional
http://www.imedar.com