1. Unitat de Farmacologia, Departament Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, IDIBELL; Universitat de Barcelona; Barcelona Spain
2. Institut de Neurociències; Universitat de Barcelona; Barcelona Spain
3. Department of Neuroscience; Karolinska Institute; Stockholm Sweden
4. Department of Anatomy; Hokkaido University School of Medicine; Sapporo Japan
5. Laboratory of GPCR Expression and Signal Transduction; Ghent University; Ghent Belgium
6. Integrative Neurobiology Section; National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health; Baltimore Maryland