An?l???? ?f th? ??rr?l?t??n b?tw??n the u?? ?file eighteen v?r??u? ????h???t?v? ?ub?t?n??? displays th?t ?????n? use correlates w?th ?th?r “occasion drug?” (?u?h ?? ???t??? ?r ?m?h?t?m?n??), ?? w?ll ?? w?th h?r??n ?nd b?nz?d??z???n?? u??, ?nd ??n b? ??n??d?r?d ?? a bridge among th? u?? ?file d?ff?r?nt gr?u?? ?f drug?.Equivalent boasts rega