About the Authors

Marc D. Ryser

ryser@math.duke.edu

Affiliation Department of Mathematics, Duke University, Durham, North Carolina, United States of America

Evan R. Myers

Affiliation Department of Obstetrics and Gynecology, Duke University Medical School, Durham, North Carolina, United States of America

Rick Durrett

Affiliation Department of Mathematics, Duke University, Durham, North Carolina, United States of America

Competing Interests

MDR and RD have no competing interests. ERM has received research funding from Merck, Inc., manufacturer of Gardasil, in the past, and currently serves as a consultant to Merck on issues regarding HPV vaccination. He is currently receiving research support from GSK, Inc., manufacturer of Cervarix, through a contract with Duke University, to evaluate the reproductive outcomes and associated costs resulting from HPV-related cervical neoplasia. Neither Merck or GSK have been involved in any way with the research described in this paper, and the results have not been presented or shared with employees or external consultants of either company.

Author Contributions

Conceived and designed the experiments: MDR ERM RD. Performed the experiments: MDR. Analyzed the data: MDR. Wrote the paper: MDR ERM RD.