This paper is in the following e-collection/theme issue:

Infodemiology and Infoveillance 

Advertisement: Preregister now for the Medicine 2.0 Congress

Works citing "Natural Supplements for H1N1 Influenza: Retrospective Observational Infodemiology Study of Information and Search Activity on the Internet"

Shawndra Hill, Jun Mao, Lyle Ungar, Sean Hennessy, Charles E. Leonard, John Holmes
J Med Internet Res 2011 (May 10); 13(2):e36 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.1722):

(note that this is only a small subset of citations)

1. Kalichman SC, Kegler C. Vaccine-Related Internet Search Activity Predicts H1N1 and HPV Vaccine Coverage: Implications for Vaccine Acceptance. Journal of Health Communication 2014;:1 [CrossRef]
2. Vaughan Sarrazin MS, Cram P, Mazur A, Ward M, Reisinger HS. Patient Perspectives of Dabigatran: Analysis of Online Discussion Forums. The Patient - Patient-Centered Outcomes Research 2014;7(1):47 [CrossRef]
3. Liang B, Scammon DL. Incidence of Online Health Information Search: A Useful Proxy for Public Health Risk Perception. Journal of Medical Internet Research 2013;15(6):e114 [CrossRef]
4. Wong PW, Fu K, Yau RS, Ma HH, Law Y, Chang S, Yip PS. Accessing Suicide-Related Information on the Internet: A Retrospective Observational Study of Search Behavior. Journal of Medical Internet Research 2013;15(1):e3 [CrossRef]
5. Hanson CL, Cannon B, Burton S, Giraud-Carrier C. An Exploration of Social Circles and Prescription Drug Abuse Through Twitter. Journal of Medical Internet Research 2013;15(9):e189 [CrossRef]
6. Hill S, Merchant R, Ungar L. Lessons Learned About Public Health from Online Crowd Surveillance. Big Data 2013;1(3):160 [CrossRef]
7. Yom-Tov E, Gabrilovich E. Postmarket Drug Surveillance Without Trial Costs: Discovery of Adverse Drug Reactions Through Large-Scale Analysis of Web Search Queries. Journal of Medical Internet Research 2013;15(6):e124 [CrossRef]