M. Qualls, D. Pallin, and J. Schuur. Academic emergency medicine : official journal of the Society for Academic Emergency Medicine, 17 (10):
1113-21(October 2010)6036<m:linebreak></m:linebreak>CI: (c) 2010; JID: 9418450; ppublish;.
A. Tobias, J. Díaz, M. Saez, and J. Alberdi. European journal of epidemiology, 17 (8):
765-71(January 2001)4331<m:linebreak></m:linebreak>LR: 20041117; PUBM: Print; JID: 8508062; 0 (Air Pollutants); ppublish;<m:linebreak></m:linebreak>Sèries temporals.