RT Journal Article SR Electronic T1 UPDATED COCHRANE REVIEW SHOWS ELECTRONIC CIGARETTES CAN HELP PEOPLE QUIT SMOKING; MORE EVIDENCE IS NEEDED ON LONG-TERM HARMS JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1271 OP 1272 VO 41 IS 11 YR 2020 UL http://smj.org.sa/content/41/11/1271.abstract AB