“…For what concerns opioids, we assessed the duration of intake, the onset of withdrawal symptoms, the average duration of the withdrawal periods, the type of opioids (e.g., heroin, acetylated poppy, prescribed opioids, and dezomorphine; Zabransky, ), the dosages, the routes of administration, and the combination with other drugs often used to reduce withdrawal symptoms (including codeine, tropicamide, phenazepam, zopiclone, and trihexyphenidyl; Bersani, Coviello, et al, ; Bersani, Imperatori, et al, ).…”