@misc{indiciae06adfb44054a, title = {Preference for basic IgG in early syphilis.}, author = {J J Van Der Sluis and H E Menke and H Neumann}, year = {1975}, doi = {10.1136/sti.51.3.161}, url = {https://pubmed.ncbi.nlm.nih.gov/237600/}, note = {Source identifier: 237600} }