Primary syphilis in men causes painful anogenital lesions and serology is not always helpful

Daniel Richardson, Pradeep Kumar, Tichaona Jaricha, Jenifer Walsh, David A Lewis
2020 Sexually Transmitted Infections  
doi:10.1136/sextrans-2020-054495 pmid:32234962 fatcat:rg3ij3vr5nglnabpk6sjmwldka