@misc{indiciae3957061fbb5f, title = {Proficiency testing for psychoactive substances in Italy.}, author = {S D Ferrara and G Brusini and S Maietti and G Frison and F Castagna and S Allevi and A M Menegus and L Tedeschi}, year = {1999}, doi = {10.1007/s004140050279}, url = {https://pubmed.ncbi.nlm.nih.gov/10654240/}, note = {Source identifier: 10654240} }