机译:Analysis of anonymized pooled urine in nine UK cities: variation in classical recreational drug, novel psychoactive substance and anabolic steroid use
Guys & St Thomas NHS Fdn Trust, Clin Toxicol Serv, London, England;
LGC, Lab & Managed Serv, Fordham, England;
Hull York Med Sch, Kingston Upon Hull, N Humberside, England;