Keywords: Rational scale to assess the harm of drugs (mean physical harm and mean dependence) for Poppers (zh-cn).svg A rational scale to assess the harm of drugs Data source is the March 24 2007 article Nutt David Leslie A King William Saulsbury Colin Blakemore Development of a rational scale to assess the harm of drugs of potential misuse The Lancet 2007; 369 1047-1053 PMID 17382831; 10 1016/S0140-6736 07 60464-4 The data in the paper is obtained solely from questionnaire results obtained from two groups of people the first comprised people from the UK national group of consultant psychiatrists who were on the Royal College of Psychiatrists ™ register as specialists in addiction while the second comprised of people with experience in one of the many areas of addiction ranging from chemistry pharmacology and forensic science through psychiatry and other medical specialties including epidemiology as well as the legal and police services; the experts are not named and were chosen by the authors This is a tertiary source see Wikipedia policy on primary secondary tertiary sources as it summarizes experts' opinions on the matter which are secondary sources without any direct references to primary sources The data was first reported in appendix 14 of Drug classification making a hash of it http //news bbc co uk/1/shared/bsp/hi/pdfs/31_07_06_drugsreport pdf I made the the svg version of Image 20drugs gif <br/> Article http //www lila it/doc/documentazione/rdd/thelancet pdf 50 2012-12-24 22 49 UTC Rational_scale_to_assess_the_harm_of_drugs_ mean_physical_harm_and_mean_dependence svg Apartmento2 derivative work Wilsonmess Nutt et al's drug harm chart |