About the Authors
- Chee-Fu Yung
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* E-mail: chee_fu_yung@ttsh.com.sg
Affiliations Department of Clinical Epidemiology, Communicable Disease Centre, Tan Tock Seng Hospital, Singapore, Singapore, Immunisation, Hepatitis and Blood Safety Department, Health Protection Services, Colindale, Health Protection Agency, London, United Kingdom
- Nick Andrews
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Affiliation Statistics Unit, Health Protection Services, Colindale, Health Protection Agency, London, United Kingdom
- Katja Hoschler
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Affiliation Respiratory Virus Unit, Virus Reference Department, Microbiology Services, Colindale, Health Protection Agency, London, United Kingdom
- Elizabeth Miller
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Affiliation Immunisation, Hepatitis and Blood Safety Department, Health Protection Services, Colindale, Health Protection Agency, London, United Kingdom
Competing Interests
N. Andrews and E. Miller have declared that no competing interests exist. C.F. Yung has received financial assistance from Sanofi-Pasteur and GlaxoSmithKline to attend conferences. K. Hoschler has been an investigator for clinical trials sponsored by Sanofi Pasteur, CSL Australia and Baxter but received no payment for this. K. Hoschler has on one occasion received financial assistance from Sanofi-Pasteur to attend a conference. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: CFY EM. Performed the experiments: KH. Analyzed the data: NA. Wrote the paper: CFY NA KH EM.