Karanth SS, Lairson DR, Huang D, Savas LS, Vernon SW, Fernandez ME. The cost of implementing two small media interventions to promote HPV vaccination. Prev Med. 2017 Jun;99:277-81. doi: 10.1016/j.ypmed.2017.03.002
Zarkin GA, Bray JW, Davis KL, Babor TF, Higgins-Biddle JC. The costs of screening and brief intervention for risky alcohol use. J Stud Alcohol. 2003 Jan 1;64(6):849-57.