J. Koo

773 total citations
19 papers, 600 citations indexed

About

J. Koo is a scholar working on Surgery, Gastroenterology and Oncology. According to data from OpenAlex, J. Koo has authored 19 papers receiving a total of 600 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Surgery, 6 papers in Gastroenterology and 4 papers in Oncology. Recurrent topics in J. Koo's work include Helicobacter pylori-related gastroenterology studies (5 papers), Gastroesophageal reflux and treatments (4 papers) and Gastrointestinal disorders and treatments (4 papers). J. Koo is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (5 papers), Gastroesophageal reflux and treatments (4 papers) and Gastrointestinal disorders and treatments (4 papers). J. Koo collaborates with scholars based in Canada, Hong Kong and China. J. Koo's co-authors include P. Lynne Howell, Stephanie Tammam, L.M. Sampaleanu, Lori L. Burrows, T. M. S. Chang, Shiu‐Kum Lam, Hanjeong Harvey, Theophilus J. Gana, Anthony S. Russell and John Wong and has published in prestigious journals such as Journal of Clinical Oncology, Journal of Molecular Biology and Annals of Surgery.

In The Last Decade

J. Koo

19 papers receiving 568 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Koo Canada 12 239 201 187 106 56 19 600
Jun Sik Yoon South Korea 14 107 0.4× 273 1.4× 76 0.4× 103 1.0× 14 0.3× 42 764
Sena Bae United States 10 147 0.6× 595 3.0× 118 0.6× 47 0.4× 39 0.7× 16 976
Fumihiro Yoshimura Japan 9 156 0.7× 112 0.6× 71 0.4× 132 1.2× 21 0.4× 38 603
Karen Pickard United Kingdom 11 99 0.4× 289 1.4× 74 0.4× 80 0.8× 11 0.2× 15 695
Rachel C. Newsome United States 13 127 0.5× 603 3.0× 84 0.4× 26 0.2× 34 0.6× 20 897
Ylaine Gerardin United States 10 160 0.7× 592 2.9× 96 0.5× 206 1.9× 15 0.3× 20 884
George T. Fantry United States 13 576 2.4× 112 0.6× 69 0.4× 202 1.9× 6 0.1× 34 853
Risheng Zhao China 13 259 1.1× 393 2.0× 70 0.4× 42 0.4× 131 2.3× 49 865
Lígia Yukie Sassaki Brazil 12 154 0.6× 250 1.2× 259 1.4× 52 0.5× 4 0.1× 82 687
Guido Hanauer Germany 9 310 1.3× 222 1.1× 20 0.1× 84 0.8× 7 0.1× 22 602

Countries citing papers authored by J. Koo

Since Specialization
Citations

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

Fields of papers citing papers by J. Koo

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Koo. 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 J. Koo. The network helps show where J. Koo may publish in the future.

Co-authorship network of co-authors of J. Koo

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

All Works

19 of 19 papers shown
1.
Koo, J., et al.. (2024). Failure after intramedullary nailing for geriatric trochanteric fracture: does quality of fracture reduction on the AP and lateral planes show the same results?. Archives of Orthopaedic and Trauma Surgery. 144(3). 1233–1241. 2 indexed citations
2.
Tammam, Stephanie, L.M. Sampaleanu, J. Koo, et al.. (2011). Characterization of the PilN, PilO and PilP type IVa pilus subcomplex. Molecular Microbiology. 82(6). 1496–1514. 62 indexed citations
3.
Sampaleanu, L.M., J. Koo, Stephanie Tammam, et al.. (2009). Periplasmic Domains of Pseudomonas aeruginosa PilN and PilO Form a Stable Heterodimeric Complex. Journal of Molecular Biology. 394(1). 143–159. 72 indexed citations
4.
Sampaleanu, L.M., Stephanie Tammam, J. Koo, et al.. (2009). PilM/N/O/P Proteins Form an Inner Membrane Complex That Affects the Stability of the Pseudomonas aeruginosa Type IV Pilus Secretin. Journal of Molecular Biology. 394(1). 128–142. 108 indexed citations
5.
Goodwin, Pamela J., Marguerite Ennis, K. Pritchard, J. Koo, & Nicky Hood. (2008). Frequency of vitamin D (Vit D) deficiency at breast cancer (BC) diagnosis and association with risk of distant recurrence and death in a prospective cohort study of T1–3, N0–1, M0 B. Journal of Clinical Oncology. 26(15_suppl). 511–511. 24 indexed citations
6.
Koo, J. & Arthur J. Kaffes. (2006). Endoscopic Resection of Large Colonic Lipomas Assisted by a Prototype Single-Use Endoloop Device. Endoscopy. 38(6). 644–647. 14 indexed citations
7.
Goodwin, Pamela J., Marguerite Ennis, K. Pritchard, et al.. (2004). Association of young age and chemotherapy with psychosocial distress and health-related quality of life (HRQOL) during the first year after breast cancer (BC). Journal of Clinical Oncology. 22(14_suppl). 8014–8014. 5 indexed citations
8.
Goodwin, Pamela J., et al.. (2004). Association of young age and chemotherapy with psychosocial distress and health-related quality of life (HRQOL) during the first year after breast cancer (BC). Journal of Clinical Oncology. 22(14_suppl). 8014–8014. 2 indexed citations
9.
Kirkpatrick, Andrew W., et al.. (1999). Endoscopic perforation of the rectum presenting initially as a change in voice.. PubMed. 42(4). 305–6. 4 indexed citations
10.
Koo, J. & T. M. S. Chang. (1993). Secretion of Erythropoietin from Microencapsulated Rat Kidney Cells: Preliminary Results. The International Journal of Artificial Organs. 16(7). 557–560. 56 indexed citations
11.
Jamali, Fakhreddin, Reza Mehvar, Anthony S. Russell, et al.. (1992). Human Pharmacokinetics of Ibuprofen Enantiomers following Different Doses and Formulations: Intestinal Chiral Inversion. Journal of Pharmaceutical Sciences. 81(3). 221–225. 61 indexed citations
12.
Gana, Theophilus J., J. Koo, & Brian MacPherson. (1992). Gross and histologic effects of topical misoprostol on canine gastric mucosa. Experimental and Toxicologic Pathology. 44(1). 40–46. 2 indexed citations
13.
Gana, Theophilus J., Brian MacPherson, & J. Koo. (1989). The Dose-Response of Canine Focal Gastric Mucosal Blood Flow to Misoprostol. Scandinavian Journal of Gastroenterology. 24(4). 423–429. 3 indexed citations
14.
Gana, Theophilus J., et al.. (1987). Focal gastric mucosal blood flow by laser-Doppler and hydrogen gas clearance: A comparative study. Journal of Surgical Research. 43(4). 337–343. 28 indexed citations
15.
Lam, Shiu‐Kum & J. Koo. (1985). Gastrin sensitivity in duodenal ulcer.. Gut. 26(5). 485–490. 16 indexed citations
16.
17.
Koo, J., et al.. (1983). Gastric Acid Secretion and Its Predictive Value after Vagotomy for Perforated Duodenal Ulcer. Scandinavian Journal of Gastroenterology. 18(7). 929–934. 5 indexed citations
18.
Lam, Shiu‐Kum, J. Koo, & W. Sircus. (1983). Early- and Late-Onset Duodenal Ulcers in Chinese and Scots. Scandinavian Journal of Gastroenterology. 18(5). 651–658. 20 indexed citations
19.
Boey, John, et al.. (1982). Immediate Definitve Surgery for Perforated Duodenal Ulcers. Annals of Surgery. 196(3). 338–344. 61 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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