Ralph D Whitehead
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Explore the profile of Ralph D Whitehead including associated specialties, affiliations and a list of published articles.
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Articles
9
Citations
243
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Recent Articles
1.
Fischer C, Zhang M, Sternberg M, Jefferds M, Whitehead R, Mei Z, et al.
J Nutr
. 2021 Oct;
152(1):350-359.
PMID: 34605545
Background: The low cost and small specimen volume of the VitMin Lab ELISA assays for serum ferritin (Fer), soluble transferrin receptor (sTfR), C-reactive protein (CRP), and α-1-acid glycoprotein (AGP) have...
2.
Pickens C, Flores-Ayala R, Ford N, Whitehead R, Tanumihardjo S, Ngalombi S, et al.
J Nutr
. 2021 Feb;
151(4):1025-1028.
PMID: 33561264
Background: High-dose vitamin A (VA) supplements (VAS) can temporarily affect VA status. Hence, micronutrient surveys might need to be timed around VAS campaigns to accurately estimate VA deficiency (VAD) prevalence....
3.
Ford N, Ruth L, Ngalombi S, Lubowa A, Halati S, Ahimbisibwe M, et al.
J Nutr
. 2020 Jan;
150(4):938-944.
PMID: 31923315
Background: Micronutrient powders (MNP) can reduce iron deficiency and anemia in children. Objective: We evaluated the impact of an integrated infant and young child feeding (IYCF)-MNP intervention on anemia and...
4.
Ford N, Bichha R, Parajuli K, Paudyal N, Joshi N, Whitehead R, et al.
J Nutr
. 2019 Dec;
150(4):929-937.
PMID: 31883009
Background: Anemia is a major concern for children in Nepal; however, little is known about context-specific causes of anemia. Objective: We used cross-sectional data from the 2016 Nepal National Micronutrient...
5.
Williams A, Ladva C, Leon J, Lopman B, Tangpricha V, Whitehead R, et al.
Am J Clin Nutr
. 2019 Sep;
110(6):1456-1464.
PMID: 31504095
Background: To accurately assess micronutrient status, it is necessary to characterize the effects of inflammation and the acute-phase response on nutrient biomarkers. Objective: Within a norovirus human challenge study, we...
6.
Ngeno B, Perrine C, Whitehead R, Subedi G, Mebrahtu S, Dahal P, et al.
Nutrients
. 2017 Jan;
9(1).
PMID: 28106733
Many children in low- and middle-income countries may have inadequate intake of vitamin B12 and folate; data confirming these inadequacies are limited. We used biochemical, demographic, behavioral and anthropometric data...
7.
Barr D, Olsson A, Wong L, Udunka S, Baker S, Whitehead R, et al.
Environ Health Perspect
. 2010 Feb;
118(6):742-8.
PMID: 20129874
Background: Pyrethroid insecticides are the most commonly used residential insecticides in the United States. Objectives: Our objective was to assess human exposure via biomonitoring to pyrethroid insecticides in a representative...
8.
Norrgran J, Bravo R, Bishop A, Restrepo P, Whitehead R, Needham L, et al.
J Chromatogr B Analyt Technol Biomed Life Sci
. 2005 Nov;
830(2):185-95.
PMID: 16297668
We developed a sensitive, selective and precise method for measuring herbicide metabolites in human urine. Our method uses automated liquid delivery of internal standards and acetate buffer and a mixed...
9.
Bravo R, Caltabiano L, Weerasekera G, Whitehead R, Fernandez C, Needham L, et al.
J Expo Anal Environ Epidemiol
. 2004 May;
14(3):249-59.
PMID: 15141154
Urinary dialkylphosphate (DAP) metabolites have been used to estimate human exposure to organophosphorus pesticides. We developed a method for quantifying the six DAP urinary metabolites of at least 28 organophosphorus...