8 The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, China Correspondence to Professor Xifeng Wu, Department of Big Data in Health Science, School of Public Health ...

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Correspondence to Dr Hendrika J Luijendijk, General Practice and Elderly Care Medicine, University Medical Centre Groningen, Groningen 9713 GZ, The Netherlands; h.j.luijendijk{at}umcg.nl PICOs are ...

Correspondence to Dr Kerry Dwan, Centre for Reviews and Dissemination, University of York, York, UK; Kerry.dwan{at}york.ac.uk A systematic review identifies, appraises and synthesises all the ...

Correspondence to Dr John Ferguson, Clinical Research Facility, National University of Ireland Galway, Galway, Ireland; john.ferguson{at}nuigalway.ie Commonly accepted statistical advice dictates that ...

Globally, drug regulators have approved statins for the prevention of cardiovascular disease (CVD), although their use in primary prevention has been controversial. A highly publicised debate has ...

Correspondence to Dr Gillian Stokes, Social Research Institute, EPPI Centre, University College London, London, WC1H 0NS, UK; gillian.stokes{at}ucl.ac.uk Searches conducted a year or more before ...

Correspondence to Dr Juan Victor Ariel Franco, Associate Cochrane Centre-Research Department, Instituto Universitario Hospital Italiano de Buenos Aires, Buenos Aires C1199, Argentina; ...

Background Enzyme-inducing antibacterial drugs can impair the efficacy of hormonal contraceptives. Suspicion that other antibiotics might do likewise led to advice that extra contraceptive precautions ...