RT Journal Article SR Electronic T1 Can’t see the wood for the trees: confounders, colliders and causal inference - a clinician’s approach JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 321 OP 322 DO 10.1136/thoraxjnl-2018-212488 VO 74 IS 4 A1 Quint, Jennifer K A1 Minelli, Cosetta YR 2019 UL http://thorax.bmj.com/content/74/4/321.abstract AB