1. Can HPV vaccine have other health benefits more than cancer prevention
Can HPV vaccine have other health benefits more than cancer prevention? A systematic review of association between cervical HPV infection and preterm birth 
Qi-tao Huang, Mei Zhong, Yun-fei Gao, Li-ping Huang, Qiong Huang, Wei Wang, Zhi-jian Wang, Yan-hong Yu 
Journal of Clinical Virology 
Volume 61, Issue 3, Pages (November 2014)
DOI: /j.jcv
Copyright © 2014 Elsevier B.V. Terms and Conditions

2. Fig. 1 Flow chart of the literature search and article selection.
Journal of Clinical Virology  , DOI: ( /j.jcv )
Copyright © 2014 Elsevier B.V. Terms and Conditions

3. Fig. 2
Forest plot of the association between human papillomavirus infection and risk of preterm birth.
Journal of Clinical Virology  , DOI: ( /j.jcv )
Copyright © 2014 Elsevier B.V. Terms and Conditions

4. Fig. 3
Funnel plot of the association between human papillomavirus infection and risk of preterm birth.
Journal of Clinical Virology  , DOI: ( /j.jcv )
Copyright © 2014 Elsevier B.V. Terms and Conditions