RT Journal Article SR Electronic T1 Respiratory symptoms and ventilatory function: a family study. JF British Journal of Preventive & Social Medicine JO Br J Prev Soc Med FD BMJ Publishing Group Ltd SP 77 OP 84 DO 10.1136/jech.23.2.77 VO 23 IS 2 A1 W W Holland A1 H S Kasap A1 J R Colley A1 W Cormack YR 1969 UL http://jech.bmj.com/content/23/2/77.abstract AB