Timothy W. Valk

1.2k total citations · 1 hit paper
15 papers, 857 citations indexed

About

Timothy W. Valk is a scholar working on Endocrinology, Diabetes and Metabolism, Surgery and Reproductive Medicine. According to data from OpenAlex, Timothy W. Valk has authored 15 papers receiving a total of 857 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Endocrinology, Diabetes and Metabolism, 6 papers in Surgery and 6 papers in Reproductive Medicine. Recurrent topics in Timothy W. Valk's work include Adrenal and Paraganglionic Tumors (6 papers), Ovarian function and disorders (5 papers) and Hypothalamic control of reproductive hormones (4 papers). Timothy W. Valk is often cited by papers focused on Adrenal and Paraganglionic Tumors (6 papers), Ovarian function and disorders (5 papers) and Hypothalamic control of reproductive hormones (4 papers). Timothy W. Valk collaborates with scholars based in United States and Australia. Timothy W. Valk's co-authors include John C. Marshall, Robert P. Kelch, Kevin P. Corley, William H. Beierwaltes, Dennis P. Swanson, Milton D. Gross, Marc Frager, Michael C. Tobes, James C. Sisson and Norman W. Thompson and has published in prestigious journals such as New England Journal of Medicine, Journal of Clinical Investigation and SHILAP Revista de lepidopterología.

In The Last Decade

Timothy W. Valk

15 papers receiving 792 citations

Hit Papers

Scintigraphic Localization of Pheochromocytoma 1981 2026 1996 2011 1981 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Scintigraphic Localization of Pheochromocytoma
    1981 398 citations James C. Sisson, Marc Frager et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Timothy W. Valk United States 10 388 368 233 222 183 15 857
Marc Frager United States 6 326 0.8× 282 0.8× 162 0.7× 170 0.8× 139 0.8× 10 666
Maurice Sutton United Kingdom 10 591 1.5× 195 0.5× 65 0.3× 28 0.1× 87 0.5× 28 833
Arnoud P. van Seters Netherlands 18 580 1.5× 352 1.0× 48 0.2× 133 0.6× 47 0.3× 35 791
Katarzyna Ziemnicka Poland 20 451 1.2× 159 0.4× 106 0.5× 49 0.2× 126 0.7× 89 972
S R Ahmed United Kingdom 14 613 1.6× 194 0.5× 98 0.4× 23 0.1× 95 0.5× 17 885
M D Littley United Kingdom 11 657 1.7× 199 0.5× 70 0.3× 20 0.1× 102 0.6× 16 893
J. Verhelst Belgium 16 969 2.5× 448 1.2× 42 0.2× 50 0.2× 65 0.4× 41 1.3k
A. Bennet France 13 314 0.8× 122 0.3× 141 0.6× 22 0.1× 93 0.5× 37 651
Radha Ramachandran United Kingdom 15 120 0.3× 174 0.5× 421 1.8× 88 0.4× 78 0.4× 37 886
Kenneth Ocran Germany 17 273 0.7× 187 0.5× 62 0.3× 31 0.1× 29 0.2× 36 860

Countries citing papers authored by Timothy W. Valk

Since Specialization
Citations

This map shows the geographic impact of Timothy W. Valk'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 Timothy W. Valk with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Timothy W. Valk more than expected).

Fields of papers citing papers by Timothy W. Valk

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Timothy W. Valk. 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 Timothy W. Valk. The network helps show where Timothy W. Valk may publish in the future.

Co-authorship network of co-authors of Timothy W. Valk

This figure shows the co-authorship network connecting the top 25 collaborators of Timothy W. Valk. A scholar is included among the top collaborators of Timothy W. Valk 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 Timothy W. Valk. Timothy W. Valk is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

15 of 15 papers shown
1.
Valk, Timothy W., et al.. (2020). Managing hyperglycemia during the COVID-19 pandemic: Improving outcomes using new technologies in intensive care. SHILAP Revista de lepidopterología. 8. 2108046174–2108046174. 6 indexed citations
2.
3.
Valk, Timothy W., Brahm Shapiro, Marc Frager, et al.. (1982). CARDIAC FUNCTION IN UNCOMPLICATED INSULIN-DEPENDENT DIABETES MELLITUS: ALTERATIONS REVERSED BY IMPROVED GLUCOSE CONTROL. Nuclear Medicine Communications. 3(4). 238–246. 2 indexed citations
4.
Sisson, James C., Marc Frager, Timothy W. Valk, et al.. (1982). Scintigraphic Localization of Pheochromocytoma. The Journal of Urology. 127(1). 198–198. 5 indexed citations
5.
Valk, Timothy W., et al.. (1981). Spectrum of Pheochromocytoma in Multiple Endocrine Neoplasia. Annals of Internal Medicine. 94(6). 762–767. 90 indexed citations
6.
Sisson, James C., Marc Frager, Timothy W. Valk, et al.. (1981). Scintigraphic Localization of Pheochromocytoma. New England Journal of Medicine. 305(1). 12–17. 398 indexed citations breakdown →
7.
Gross, Milton D., Timothy W. Valk, Dennis P. Swanson, James H. Thrall, & William H. Beierwaltes. (1981). The role of pharmacologic manipulation in adrenal cortical scintigraphy. Seminars in Nuclear Medicine. 11(2). 128–148. 38 indexed citations
8.
Valk, Timothy W., Barry G. England, & John C. Marshall. (1981). EFFECTS OF CIMETIDINE ON PITUITARY FUNCTION: ALTERATIONS IN HORMONE SECRETION PROFILES. Clinical Endocrinology. 15(2). 139–149. 17 indexed citations
9.
Gross, Milton D., et al.. (1981). The Relationship of Adrenal Iodomethylnorcholesterol Uptake to Indices of Adrenal Cortical Function in Cushing's Syndrome. The Journal of Clinical Endocrinology & Metabolism. 52(6). 1062–1066. 20 indexed citations
10.
Valk, Timothy W., John C. Marshall, & Robert P. Kelch. (1981). Simulation of the follicular phase of the menstrual cycle by intravenous administration of low-dose pulsatile gonadotropin-releasing hormone. American Journal of Obstetrics and Gynecology. 141(7). 842–843. 14 indexed citations
11.
Corley, Kevin P., Timothy W. Valk, Robert P. Kelch, & John C. Marshall. (1981). Estimation of GnRH Pulse Amplitude during Pubertal Development. Pediatric Research. 15(2). 157–162. 54 indexed citations
12.
Valk, Timothy W., Kevin P. Corley, Robert P. Kelch, & John C. Marshall. (1981). Pulsatile Gonadotropin-Releasing Hormone in Gonadotropin Deficient and Normal Men: Suppression of Follicle-Stimulating Hormone Responses by Testosterone*. The Journal of Clinical Endocrinology & Metabolism. 53(1). 184–191. 30 indexed citations
13.
Valk, Timothy W., Milton D. Gross, John E. Freitas, et al.. (1980). The relationship of serum lipids to adrenal-gland uptake of 6 beta-[131I]iodomethyl-19-norcholesterol in Cushing's syndrome.. PubMed. 21(11). 1069–72. 6 indexed citations
14.
Valk, Timothy W., Kevin P. Corley, Robert P. Kelch, & John C. Marshall. (1980). Hypogonadotropic Hypogonadism: Hormonal Responses to Low Dose Pulsatile Administration of Gonadotropin-Releasing Hormone*. The Journal of Clinical Endocrinology & Metabolism. 51(4). 730–738. 131 indexed citations
15.
Valk, Timothy W., et al.. (1975). Production and Measurement of Exophthalmos-Producing Factor in Guinea Pigs12. Endocrinology. 96(1). 151–159. 2 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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