Abstract
EDITOR,—The rationale for the Cochrane Collaboration's publication of systematic reviews electronically is that this medium facilitates updating of reviews in the light of new data and valid criticisms.1 Dissemination by electronic publication is, however, novel, and the medium is still being developed. In 1993 a survey reported limited uptake of the Oxford Database of Perinatal Trials in English obstetric units.2 Yet correspondence3 4 suggested more widespread use of this database's successor, now produced by the Cochrane …