Roosaar, Ann; Johansson, Anna L.V.; Sandborgh-Englund, Gunilla; Axéll, Tony; Nyrén, Olof (2008). »Cancer and mortality among users and nonusers of snus«. International Journal of Cancer. 123 (1): 168–73. doi:10.1002/ijc.23469. PMID18412245. S2CID6667256.
Roosaar, Ann; Johansson, Anna L.V.; Sandborgh-Englund, Gunilla; Axéll, Tony; Nyrén, Olof (2008). »Cancer and mortality among users and nonusers of snus«. International Journal of Cancer. 123 (1): 168–73. doi:10.1002/ijc.23469. PMID18412245. S2CID6667256.
Roosaar, Ann; Johansson, Anna L.V.; Sandborgh-Englund, Gunilla; Axéll, Tony; Nyrén, Olof (2008). »Cancer and mortality among users and nonusers of snus«. International Journal of Cancer. 123 (1): 168–73. doi:10.1002/ijc.23469. PMID18412245. S2CID6667256.