Vinceti M, Bonvicini F, Rothman KJ, Vescovi L, Wang FY. The relation between amyotrophic lateral sclerosis and inorganic selenium in drinking water: a population-based case-control study. Environ Health. 2010 Dec 1;9(Art. No. 77).
Valdivieso E, Rey C, Barrera M, Arija V, Basora J, Marsal JR, TAB_ES Study Group. Factors associated with commencing smoking in 12-year-old students in Catalonia (Spain): a cross-sectional population-based study. BMC Public Health. 2010 Nov 2;10:665. doi: 10.1186/1471-2458-10-665