Saigi N, Espelt A, Folch C, Sarasa-Renedo A, Castellano Y, Majo X, Merono M, Brugal MT, Casabona J, REDAN Group. Differences in illegal drug consumption between native and immigrants in a large sample of injected drug users in Catalonia (Spain). Adicciones. 2014;26(1):69-76. doi: 10.20882/adicciones.136
Fondell E, Balter O, Rothman KJ. Dietary intake and supplement use of vitamins C and E and upper respiratory tract infection. J Am Coll Nutr. 2011 Aug 1;30(4):248-58.
Merrill RM, Madanat H, Layton JB, Hanson CL, Madsen CC. Smoking prevalence, attitudes, and perceived smoking prevention and control responsibilities and behaviors among physicians in Jordan. Int Q Community Health Educ. 2006;26(4):397-413.