00501nas a2200205   4500000000100000000000100001008004100002100001600043700001500059700001500074700001500089700001500104700001500119700001500134700001600149245008100165300001000246490000700256022003200263       2000                            d1 aM. Frischer1 aJ. Norwood1 aH. Heatlie1 aD. Millson1 aJ. Lowdell1 aM. Hickman1 aS. Chapman1 aJ. Bashford00aA comparison of trends in problematic drug misuse from two reporting systems  a362-70 v22  a0957-4832 (Print) 0957-4832