Following up on KCBS Radio's three-part series The Opioid Epidemic; The San Francisco Prescription, Jane McMillan looks at how this national crisis began. Her guest is Doctor Anna Lembke, Chief of the Addiction Medicine Dual Diagnosis Clinic at Stanford, who's written a book on the prescription addiction crisis called “Drug Dealer, M.D.: How Doctors Were Duped, Patients Got Hooked, and Why It's So Hard To Stop”.