Name Info Provider Link
free resource BioMed Central https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-022-06383-w
Syphilis free resource MedlinePlus Health Information https://medlineplus.gov/syphilis.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35619152/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/35619152