RT Journal Article SR Electronic T1 Airs, waters and places II JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 852 OP 854 VO 22 IS 125 A1 R. A. Yorke YR 1972 UL http://bjgp.org/content/22/125/852.abstract AB