Natural Limits of Pregnancy Testing in Relation to the Expected Menstrual Period

Incidence of Early Loss of Pregnancy

1988 • 2,216 citations

Lowering blood homocysteine with folic acid based supplements: meta-analysis of randomised trials

1998 • 1,090 citations

Time of Implantation of the Conceptus and Loss of Pregnancy

1999 • 1,022 citations

The Recent Decline in Mortality From Coronary Heart Disease, 1980-1990<subtitle>The Effect of Secular Trends in Risk Factors and Treatment</subtitle>

1997 • 647 citations

Decreased Rate of Coronary Restenosis after Lowering of Plasma Homocysteine Levels

2001 • 538 citations

The timing of the "fertile window" in the menstrual cycle: day specific estimates from a prospective study

2000 • 429 citations

Effect of folic acid and antioxidant vitamins on endothelial dysfunction in patients with coronary artery disease

2000 • 226 citations

Normal variation in the length of the follicular phase of the menstrual cycle: effect of chronological age

1984 • 189 citations

REVIEW: Pregnancy tests: a review

1992 • 160 citations

Use of a Highly Sensitive and Specific Immunoradiometric Assay for Detection of Human Chorionic Gonadotropin in Urine of Normal, Nonpregnaiit, and Pregnant Individuals*

1984 • 110 citations

Analysis of menstrual diary data across the reproductive life span Applicability of the bipartite model approach and the importance of within-woman variance

2000 • 91 citations

Diagnostic Efficiency of Home Pregnancy Test Kits: A Meta-analysis

1998 • 74 citations

Renal Insufficiency, Vitamin B ₁₂ Status, and Population Attributable Risk for Mild Hyperhomocysteinemia Among Coronary Artery Disease Patients in the Era of Folic Acid–Fortified Cereal Grain Flour

2001 • 53 citations

New pregnancy test

1948 • 40 citations

Selecting human chorionic gonadotropin immunoassays: Consideration of cross-reacting molecules in first-trimester pregnancy serum and urine

1993 • 39 citations

Time of Implantation of the Conceptus and Loss of Pregnancy

1999 • 34 citations

Specificity and Detection Limit of Ten Pregnancy Tests

1993 • 23 citations

Prevalence of home pregnancy testing among adolescents

2000 • 20 citations

Four rapid serum-urine combination assays of choriogonadotropin (hCG) compared and assessed for their utility in quantitative determinations of hCG

1994 • 18 citations

The effect of physiological urine dilution on pregnancy test results in complicated early pregnancies

1998 • 15 citations

Specificity and Detection Limit of Ten Pregnancy Tests

1993 • 12 citations