1
Published 2007
World Health Organization, International Agency for Research on Cancer
Subjects: ...Tobacco, Smokeless / adverse effects...

2
by Natvig Norderhaug, Inger
Published 2005
Norwegian Knowledge Centre for the Health Services
Subjects: ...Tobacco, Smokeless / adverse effects...

3
Published 2004
IARC Press
Subjects: ...Tobacco, Smokeless / adverse effects...