RT Journal Article SR Electronic T1 Acne vulgaris treatment JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 570 OP 570 VO 38 IS 317 A1 David Haslam YR 1988 UL http://bjgp.org/content/38/317/570.4.abstract AB