... room, injec-tion of saline solution, administration of oral fluids,putting the person in a bath). Actions taken during theoverdose were in agreement with the training received, forinstance ... animportant element in the chain of knowledge triggered bythe study, and which is informing the current work we aredoing which involves peers in the delivery of the initialtraining package. Previous ... overdose with seven optional answers:(i) using too much heroin, (ii) using heroin alongsideother substances, (iii) change in drug purity, (iv)change in tolerance, (v) switching from smoking toinjecting...