Drug use Risks in Portuguese Rural vs Urban Environments: Harm Reduction Challenges in a Progressive Drug Policy Setting. - de Sousa Pinto, Marta Sofia; Pires, Cristiana Vale; de Carvalho, Helena Maria Ribeiro Moura; Pereira, Catarina Pinto; da Silva, Gabriela Almeida Pinto; de Jesus Grilo Carapinha, Ludmila; Gonçalves, Filipa Oliveira; Valente, Helena (Journal of Psychoactive Drugs, 2026)