PLoS One
http://www.plosone.org/
[Accessed 12 Jan 2019]
Facilitators and barriers for healthcare providers to recommend HPV vaccination to attendees of public sexually transmitted diseases clinics in Hong Kong, China
Ying Ying Lee, Zixin Wang
Research Article | published 09 Jan 2019 PLOS ONE
https://doi.org/10.1371/journal.pone.0209942