RT Journal Article SR Electronic T1 False-positive TPPA and TRUST syphilis test results in a patient with antiphospholipid syndrome and monoclonal immunoglobulinaemia JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 313 OP 313 DO 10.1136/sextrans-2021-055386 VO 98 IS 4 A1 Guai-Li Liu A1 Xiao-Yan Zhou A1 Rong-Jing Dong A1 Ying-Kui Cao A1 Rowida A. Albarmaqi A1 Yu-Ye Li YR 2022 UL http://sti.bmj.com/content/98/4/313.abstract AB