RT Journal Article SR Electronic T1 Smoking and Schoolchildren JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 828 OP i3 VO 33 IS 257 A1 Jocelyn Tewson YR 1983 UL http://bjgp.org/content/33/257/828.4.abstract AB