(页面存档备份,存于互联网档案馆) Opioid information at Opioids.Net (页面存档备份,存于互联网档案馆) OpioidDependence Treatment and Guidelines (页面存档备份,存于互联网档案馆) Opioid Risk Tool (ORT)
Marinis M, Tempesta E. Lefetamine: new abuse of an old drug--clinical evaluation of opioid activity. Drug and Alcohol Dependence. 1989 Oct;24(2):95-101.