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Lancet (London, England)|January 26, 2002
Descriptive studies: what they can and cannot doDavid A Grimes, Kenneth F SchulzLancet (London, England)|January 29, 2002
Bias and causal associations in observational researchDavid A Grimes, Kenneth F SchulzContraception|December 8, 2010
Nonspecific side effects of oral contraceptives: nocebo or noise?David A Grimes, Kenneth F SchulzLancet (London, England)|March 7, 2002
Blinding in randomised trials: hiding who got whatKenneth F Schulz, David A GrimesLancet (London, England)|April 20, 2005
Compared to what? Finding controls for case-control studiesDavid A Grimes, Kenneth F SchulzLancet (London, England)|February 21, 2002
Generation of allocation sequences in randomised trials: chance, not choiceKenneth F Schulz, David A GrimesLancet (London, England)|February 28, 2002
Allocation concealment in randomised trials: defending against decipheringKenneth F Schulz, David A GrimesLancet (London, England)|May 4, 2005
Multiplicity in randomised trials I: endpoints and treatmentsKenneth F Schulz, David A GrimesLancet (London, England)|April 27, 2005
Refining clinical diagnosis with likelihood ratiosDavid A Grimes, Kenneth F SchulzLancet (London, England)|April 13, 2005
Sample size calculations in randomised trials: mandatory and mysticalKenneth F Schulz, David A GrimesPageof 20