The initials of an author, whose letter was published in the February issue of the journal, were incomplete (Smelov V, Morré SA, de Vries H. Are serological chlamydia-specific markers useful to detect asymptomatic cases of lymphogranuloma venereum proctitis? Sex Transm Infect 2008;84:77.) The full initials of the third author are HJ de Vries.