- On June 2 and 3, Prof Haeberle had visitors from Ogden, Utah: Dr. Mark K. Malan, a clinical sexologist, and his wife Colette Malan, a family and sex therapist. They discussed the general state of sexology in the US and Germany as well as current and future research opportunities at the Haeberle-Hirschfeld-Archiv, where the visitors are planning to spend some time on a return visit at a later date.