RT Journal Article SR Electronic T1 Fortschritte der praktischen Dermatologie und Venereologie, Vol. 6 JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 151 OP 151 DO 10.1136/sti.47.2.151 VO 47 IS 2 A1 L. Z. Oller YR 1971 UL http://sti.bmj.com/content/47/2/151.1.abstract AB