… PAN Germany- Pestizid Aktions-Netzwerk e.V. 41. Hamscher, G. (2013). Key Lecture: Entry, occurrence, behavior and effects of pharmaceuticals in the … PAN Germany- Pestizid Aktions-Netzwerk e.V. 41. Hamscher, G. (2013). Key Lecture: Entry, occurrence, behavior and effects of pharmaceuticals in the …