RT Journal Article SR Electronic T1 Prolonged neuropsychiatric symptoms may delay the diagnosis of parkinsonism secondary to neurosyphilis JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP sextrans-2021-055327 DO 10.1136/sextrans-2021-055327 A1 Guo, Kundian A1 Jiang, Chunxia A1 Hong, Zhen A1 Dong, Zaiquan YR 2021 UL http://sti.bmj.com/content/early/2021/12/08/sextrans-2021-055327.abstract AB