"id","author_first1","author_last1","title","year","publication","volume","issue","pages","author_first2","author_last2","author_first3","author_last3","keyword0","type" "1486","John G.","Kennedy","A medical evaluation of the use of qat in North Yemen","1983","Social Science and Medicine","17","2","783-94","James","Teague","William","Rokaw","Qat","journal"