1. Department of NeuropeptidesMossakowski Medical Research Centre, Polish Academy of Sciences 5 Pawińskiego Street, 02‐106 Warsaw Poland
2. Laboratory of Chemical SynthesisMossakowski Medical Research Centre, Polish Academy of Sciences 5 Pawińskiego Street, 02‐106 Warsaw Poland
3. Department of DermatologyMedical University of Warsaw Warsaw Poland
4. Toxicology Research LaboratoryMossakowski Medical Research Centre, Polish Academy of Sciences 5 Pawińskiego Street, 02‐106 Warsaw Poland