RT Journal Article SR Electronic T1 DIVERS IN THE NORTH SEA JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 575 OP 576 VO 26 IS 169 A1 Ibrahim S. Ayoub YR 1976 UL http://bjgp.org/content/26/169/575.3.abstract AB