Michael E. Rybak

1.9k total citations
47 papers, 1.4k citations indexed

About

Michael E. Rybak is a scholar working on Pathology and Forensic Medicine, Pharmacology and Health, Toxicology and Mutagenesis. According to data from OpenAlex, Michael E. Rybak has authored 47 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Pathology and Forensic Medicine, 9 papers in Pharmacology and 9 papers in Health, Toxicology and Mutagenesis. Recurrent topics in Michael E. Rybak's work include Phytoestrogen effects and research (9 papers), Coffee research and impacts (9 papers) and Folate and B Vitamins Research (6 papers). Michael E. Rybak is often cited by papers focused on Phytoestrogen effects and research (9 papers), Coffee research and impacts (9 papers) and Folate and B Vitamins Research (6 papers). Michael E. Rybak collaborates with scholars based in United States, Canada and Kenya. Michael E. Rybak's co-authors include Christine M Pfeiffer, Maya Sternberg, Susan L. Teitelbaum, Lawrence H. Kushi, Gayle C. Windham, Mary S. Wolff, Susan M. Pinney, Frank M. Biro, Antonia M. Calafat and James M. Harnly and has published in prestigious journals such as American Journal of Clinical Nutrition, Analytical Biochemistry and Journal of Agricultural and Food Chemistry.

In The Last Decade

Michael E. Rybak

41 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Michael E. Rybak United States	21	408	236	198	185	183	47	1.4k
Leslie R. Woodhouse United States	30	494 1.2×	443 1.9×	213 1.1×	237 1.3×	241 1.3×	66	2.4k
J. J. Strain United Kingdom	21	391 1.0×	109 0.5×	73 0.4×	187 1.0×	172 0.9×	40	1.5k
Kyria Jayanne Clímaco Cruz Brazil	18	235 0.6×	178 0.8×	110 0.6×	168 0.9×	118 0.6×	54	1.4k
Mevlüt Sait Keleş Türkiye	24	149 0.4×	290 1.2×	135 0.7×	295 1.6×	100 0.5×	82	1.8k
Juliana Soares Severo Brazil	18	189 0.5×	162 0.7×	113 0.6×	205 1.1×	121 0.7×	58	1.4k
Maria H. Borawska Poland	26	266 0.7×	287 1.2×	89 0.4×	307 1.7×	118 0.6×	108	2.1k
Halina Milnerowicz Poland	24	451 1.1×	115 0.5×	62 0.3×	352 1.9×	109 0.6×	149	2.0k
K. H. Schaller Germany	25	654 1.6×	288 1.2×	135 0.7×	211 1.1×	140 0.8×	78	2.0k
Peter Van Dael Switzerland	17	256 0.6×	208 0.9×	58 0.3×	192 1.0×	140 0.8×	34	1.4k
Hae Dong Woo South Korea	22	226 0.6×	88 0.4×	147 0.7×	405 2.2×	276 1.5×	48	1.4k

Countries citing papers authored by Michael E. Rybak

Since Specialization

Citations

This map shows the geographic impact of Michael E. Rybak's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Michael E. Rybak with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Michael E. Rybak more than expected).

Fields of papers citing papers by Michael E. Rybak

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Michael E. Rybak. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Michael E. Rybak. The network helps show where Michael E. Rybak may publish in the future.

Co-authorship network of co-authors of Michael E. Rybak

This figure shows the co-authorship network connecting the top 25 collaborators of Michael E. Rybak. A scholar is included among the top collaborators of Michael E. Rybak based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Michael E. Rybak. Michael E. Rybak is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Brown, Kenneth H., Sonja Y. Hess, Sophie E. Moore, et al.. (2025). Neglected micronutrients—considering a broader set of vitamins and minerals in public health nutrition programs worldwide: a narrative review. American Journal of Clinical Nutrition. 122(3). 680–694. 1 indexed citations

Rybak, Michael E., et al.. (2025). Principal Components Analysis of Spot Urine Caffeine and Caffeine Metabolites Identifies Promising Exposure Biomarkers of Caffeine and Theobromine Intake in a Cross-Sectional Survey of the United States Population (National Health and Nutrition Examination Survey 2009–2014). Current Developments in Nutrition. 9(5). 107441–107441.

Marks, Kristin J., Terryl J. Hartman, Ethel V. Taylor, et al.. (2017). Exposure to phytoestrogens in utero and age at menarche in a contemporary British cohort. Environmental Research. 155. 287–293. 27 indexed citations

Lisko, Joseph G., et al.. (2016). Caffeine Concentrations in Coffee, Tea, Chocolate, and Energy Drink Flavored E-liquids. Nicotine & Tobacco Research. 19(4). 484–492. 41 indexed citations

Wolff, Mary S., Susan L. Teitelbaum, Kathleen McGovern, et al.. (2015). Environmental phenols and pubertal development in girls. Environment International. 84. 174–180. 91 indexed citations

Rybak, Michael E., et al.. (2015). Urine Excretion of Caffeine and Select Caffeine Metabolites Is Common in the US Population and Associated with Caffeine Intake. Journal of Nutrition. 145(4). 766–774. 49 indexed citations

Ahluwalia, Namanjeet, Kirsten Herrick, Alanna Moshfegh, & Michael E. Rybak. (2014). Caffeine intake in children in the United States and 10-y trends: 2001–2010. American Journal of Clinical Nutrition. 100(4). 1124–1132. 40 indexed citations

Mumford, Sunni L., Rajeshwari Sundaram, Enrique F. Schisterman, et al.. (2014). Higher Urinary Lignan Concentrations in Women but Not Men Are Positively Associated with Shorter Time to Pregnancy. Journal of Nutrition. 144(3). 352–358. 39 indexed citations

Pfeiffer, Christine M, Maya Sternberg, Rosemary L. Schleicher, & Michael E. Rybak. (2013). Dietary Supplement Use and Smoking Are Important Correlates of Biomarkers of Water-Soluble Vitamin Status after Adjusting for Sociodemographic and Lifestyle Variables in a Representative Sample of U.S. Adults. Journal of Nutrition. 143(6). 957S–965S. 53 indexed citations

10.

Rybak, Michael E., Ching‐I Pao, & Christine M Pfeiffer. (2013). Determination of urine caffeine and its metabolites by use of high-performance liquid chromatography-tandem mass spectrometry: estimating dietary caffeine exposure and metabolic phenotyping in population studies. Analytical and Bioanalytical Chemistry. 406(3). 771–784. 23 indexed citations

11.

Mervish, Nancy, Maida P. Galvez, Lawrence H. Kushi, et al.. (2013). Dietary flavonol intake is associated with age of puberty in a longitudinal cohort of girls. Nutrition Research. 33(7). 534–542. 22 indexed citations

12.

Yard, Ellen, Johnni Daniel, Lauren Lewis, et al.. (2013). Human aflatoxin exposure in Kenya, 2007: a cross-sectional study. Food Additives & Contaminants Part A. 30(7). 1322–1331. 101 indexed citations

13.

Bhatia, Jatinder, Christina Chambers, Robert Clarke, et al.. (2011). NTP‐CERHR expert panel report on the developmental toxicity of soy infant formula. Birth Defects Research Part B Developmental and Reproductive Toxicology. 92(5). 421–468. 66 indexed citations

14.

Rybak, Michael E., et al.. (2011). Phytoestrogen biomonitoring: an extractionless LC-MS/MS method for measuring urinary isoflavones and lignans by use of atmospheric pressure photoionization (APPI). Analytical and Bioanalytical Chemistry. 402(3). 1123–1136. 20 indexed citations

15.

Wolff, Mary S., Susan L. Teitelbaum, Susan M. Pinney, et al.. (2010). Investigation of Relationships between Urinary Biomarkers of Phytoestrogens, Phthalates, and Phenols and Pubertal Stages in Girls. Environmental Health Perspectives. 118(7). 1039–1046. 236 indexed citations

16.

Rybak, Michael E. & Christine M Pfeiffer. (2009). A simplified protein precipitation and filtration procedure for determining serum vitamin B6 by high-performance liquid chromatography. Analytical Biochemistry. 388(1). 175–177. 9 indexed citations

17.

Rybak, Michael E., et al.. (2007). Determination of urinary phytoestrogens by HPLC–MS/MS: A comparison of atmospheric pressure chemical ionization (APCI) and electrospray ionization (ESI). Journal of Chromatography B. 861(1). 145–150. 43 indexed citations

18.

Rybak, Michael E., et al.. (2006). Pomiar grubości membran krzemowych stosowanych w mikroczujnikach. Elektronika : konstrukcje, technologie, zastosowania. 47. 53–56.

19.

Rybak, Michael E., Ram B. Jain, & Christine M Pfeiffer. (2005). Clinical Vitamin B6 Analysis: An Interlaboratory Comparison of Pyridoxal 5′-Phosphate Measurements in Serum. Clinical Chemistry. 51(7). 1223–1231. 26 indexed citations

20.

Rybak, Michael E. & Christine M Pfeiffer. (2004). Clinical analysis of vitamin B6: Determination of pyridoxal 5′-phosphate and 4-pyridoxic acid in human serum by reversed-phase high-performance liquid chromatography with chlorite postcolumn derivatization. Analytical Biochemistry. 333(2). 336–344. 60 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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