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P Leffers

Showing results (1-10 of 54) with videos related to

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BMJ (Clinical Research Ed.)|January 28, 1989
Sensitivity and specificity of Rinne tuning fork testC Thijs, P Leffers
Journal of Clinical Epidemiology|October 1, 1992
The influence of referral patterns on the characteristics of diagnostic testsJ A Knottnerus, P Leffers
Preventive Medicine|January 1, 1993
Oral contraceptive use and the occurrence of gallstone disease--a case-control studyC Thijs, P Leffers, P Knipschild
American Journal of Epidemiology|February 1, 1992
Is gallstone disease caused by obesity or by dieting?C Thijs, P Knipschild, P Leffers
Epidemiology (Cambridge, Mass.)|November 1, 1993
Control of confounding requires specification of risk periodsC Thijs, P Leffers, P Knipschild
American Journal of Epidemiology|July 15, 1991
Pregnancy and gallstone disease: an empiric demonstration of the importance of specification of risk periodsC Thijs, P Knipschild, P Leffers
Epidemiology (Cambridge, Mass.)|May 1, 1995
Alcohol drinking and gallstone diseaseC Thijs, P Leffers, P Knipschild
Gut|October 1, 1994
Risk factors for symptomatic gall bladder diseaseC Thijs, P Knipschild, P Leffers
Journal of Clinical Epidemiology|January 1, 1991
Does alcohol protect against the formation of gallstones? A demonstration of protopathic biasC Thijs, P Knipschild, P Leffers
Nederlands Tijdschrift Voor Geneeskunde|October 29, 1994
[Lack of uniformity and low compliance concerning wake-up advice following head trauma]A de Louw, A Twijnstra, P Leffers
Pageof 6

Showing results (1-10 of 54) with videos related to

Sort By:
Pageof 6
BMJ (Clinical Research Ed.)|January 28, 1989
Sensitivity and specificity of Rinne tuning fork testC Thijs, P Leffers
Journal of Clinical Epidemiology|October 1, 1992
The influence of referral patterns on the characteristics of diagnostic testsJ A Knottnerus, P Leffers
Preventive Medicine|January 1, 1993
Oral contraceptive use and the occurrence of gallstone disease--a case-control studyC Thijs, P Leffers, P Knipschild
American Journal of Epidemiology|February 1, 1992
Is gallstone disease caused by obesity or by dieting?C Thijs, P Knipschild, P Leffers
Epidemiology (Cambridge, Mass.)|November 1, 1993
Control of confounding requires specification of risk periodsC Thijs, P Leffers, P Knipschild
American Journal of Epidemiology|July 15, 1991
Pregnancy and gallstone disease: an empiric demonstration of the importance of specification of risk periodsC Thijs, P Knipschild, P Leffers
Epidemiology (Cambridge, Mass.)|May 1, 1995
Alcohol drinking and gallstone diseaseC Thijs, P Leffers, P Knipschild
Gut|October 1, 1994
Risk factors for symptomatic gall bladder diseaseC Thijs, P Knipschild, P Leffers
Journal of Clinical Epidemiology|January 1, 1991
Does alcohol protect against the formation of gallstones? A demonstration of protopathic biasC Thijs, P Knipschild, P Leffers
Nederlands Tijdschrift Voor Geneeskunde|October 29, 1994
[Lack of uniformity and low compliance concerning wake-up advice following head trauma]A de Louw, A Twijnstra, P Leffers
Pageof 6