Footnotes

• Handling editor Anna Maria Geretti

• Contributors LMO conceptualised the idea for the abstract and participated in its design and coordination together with AR, NM, KN, CK and AW to draft the manuscript. SS, KT and SGM performed the data statistical analysis. MM, EC and LMO were involved in the data collection. BC participated in the lab analysis. All authors read and approved the final manuscript.

• Funding This research was funded by R01 HD091996-01 (ACR) from NICHD, by P01 AI 030731-25 (Project 2) (AW) and by the University of Washington/Fred Hutchinson Cancer Research Center, Center for AIDS Research (CFAR), AI027757. We thank the participants. We thank CROI for scholarship funding that enabled us to present this data at the CROI Seattle 2019 conference. Study data were collected and managed using REDCap electronic data capture tools hosted at the University of Washington funded by UL1 TR002319, KL2 TR002317 and TL1 TR002318 from NCATS/NIH.

• Disclaimer The funders had no role in study design, data collection and analysis or preparation of the manuscript. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

• Competing interests None declared.

• Provenance and peer review Not commissioned; externally peer reviewed.