TY - STAND
AU - S. Price
AU - S. Stapley
AU - E. Shephard
AU - K. Barraclough
AU - W. Hamilton
BT - BMJ Open
DO - 10.1136/bmjopen-2016-011664
M1 - 5
PY - 2016
EP - e011664
T2 - BMJ Open
TI - Is omission of free text records a possible source of data loss and bias in Clinical Practice Research Datalink studies? A case-control study
VL - 6
SN - 2044-6055
ER -