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While the AIR score has better predictive power than certain other diagnostic tools for appendicitis (e.g. the Alvarado score), it has only been validated in a small number of studies as of 2017. [ 5 ]
ISO 3166-2, International Organization for Standardization - ISO 3166 Codes Mexico. ISO 3166 Country Codes, International Organization for Standardization. Accessed on line October 21, 2007. States of Mexico, statoids.com. Last updated April 23, 2007; accessed on line October 21, 2007.
New area codes were assigned in the overlay format to address number exhaustion: in 2017, Toluca and Puebla and in 2018, León, Mexico City, and Tijuana. In the early development of International Direct Distance Dialing (IDDD), Mexico elected to join World Zone 5, instead of joining the North American Numbering Plan (NANP). [ 5 ]
Pain in the lower left abdomen may be caused by several different conditions. Experts explain.
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664 is an area code within Mexico's National Phone Numbering Schema (Plan Nacional de Numeracion). It covers the municipality of Tijuana, Baja California. It overlays area code 663. Calls to numbers with the Mexican area code 664 must be dialed as any other international call, using the international call prefix, and the country code 52
Some forms of city directories provide this form of lookup for listed services by phone number, along with address cross-referencing. Publicly accessible reverse telephone directories may be provided as part of the standard directory services from the telecommunications carrier in some countries.