Authors: Lucas Wiessing; Marica Ferri; Vendula Běláčková; Patrizia Carrieri; Samuel R Friedman; Cinta Folch; Kate Dolan; Brian Galvin; Peter Vickerman; Jeffrey V Lazarus; Viktor Mravčík; Mirjam Kretzschmar; Vana Sypsa; Ana Sarasa-Renedo; Anneli Uusküla; Dimitrios Paraskevis; Luis Mendão; Diana Rossi; Nadine van Gelder; Luke Mitcheson; Letizia Paoli; Cristina Diaz Gomez; Maitena Milhet; Nicoleta Dascalu; Jonathan Knight; Gordon Hay; Eleni Kalamara; Roland Simon; Catherine Comiskey; Carla Rossi; Paul Griffiths Journal: Harm Reduct J Date: 2017-04-22