Niro Ujiie

936 total citations · 1 hit paper
13 papers, 663 citations indexed

About

Niro Ujiie is a scholar working on Epidemiology, Pediatrics, Perinatology and Child Health and Hepatology. According to data from OpenAlex, Niro Ujiie has authored 13 papers receiving a total of 663 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Epidemiology, 4 papers in Pediatrics, Perinatology and Child Health and 4 papers in Hepatology. Recurrent topics in Niro Ujiie's work include Hepatitis B Virus Studies (4 papers), Hepatitis C virus research (4 papers) and Neonatal Health and Biochemistry (3 papers). Niro Ujiie is often cited by papers focused on Hepatitis B Virus Studies (4 papers), Hepatitis C virus research (4 papers) and Neonatal Health and Biochemistry (3 papers). Niro Ujiie collaborates with scholars based in Japan. Niro Ujiie's co-authors include Hitoshi Ohto, Hiroaki Okamoto, Nobuhiko Sasaki, Akira Matsui, Kunihiko Hino, Chieko Ishiwata, Chikara Endo, Sousuke Terazawa, Shunji Mishiro and Makoto Kako and has published in prestigious journals such as New England Journal of Medicine, Transfusion and Obstetrical & Gynecological Survey.

In The Last Decade

Niro Ujiie

12 papers receiving 635 citations

Hit Papers

align trajectories

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.

Transmission of Hepatitis C Virus from Mothers to Infants

1994 473 citations Hitoshi Ohto, Sousuke Terazawa 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						Papers	Cites
Niro Ujiie Japan	8	506	499	99	46	39	13	663
Sousuke Terazawa Japan	5	528 1.0×	538 1.1×	75 0.8×	16 0.3×	14 0.4×	5	626
C. Fretz France	13	713 1.4×	766 1.5×	119 1.2×	16 0.3×	14 0.4×	20	935
B. Berris Canada	15	423 0.8×	334 0.7×	60 0.6×	11 0.2×	14 0.4×	42	598
Santosh Man Shrestha Nepal	18	634 1.3×	815 1.6×	155 1.6×	11 0.2×	26 0.7×	51	998
Joëlle Lerable France	9	316 0.6×	299 0.6×	164 1.7×	65 1.4×	26 0.7×	14	474
Giulia Tositti Italy	12	334 0.7×	271 0.5×	166 1.7×	13 0.3×	8 0.2×	28	607
Amel Sadraoui Tunisia	13	298 0.6×	245 0.5×	112 1.1×	12 0.3×	93 2.4×	35	419
Stanislas Pol France	7	488 1.0×	436 0.9×	107 1.1×	18 0.4×	6 0.2×	7	645
Ioannis Varbobitis Greece	6	469 0.9×	87 0.2×	91 0.9×	7 0.2×	11 0.3×	8	573
E. Minola Italy	12	780 1.5×	731 1.5×	83 0.8×	5 0.1×	6 0.2×	26	923

Countries citing papers authored by Niro Ujiie

Since Specialization

Citations

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

Fields of papers citing papers by Niro Ujiie

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Niro Ujiie

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

All Works

Sort: Min cites: Since: Top N: Style:

13 of 13 papers shown

1.

Ito, Shinya, et al.. (2023). Anemia-related subjective symptoms in the general adult population in Japan. Journal of Rural Medicine. 19(1). 17–23.

2.

Imamura, Takashi, Maki Sato, Koichi Hashimoto, et al.. (2011). Glucocorticoid receptor expression and cortisol level in cord blood of term infants. The Journal of Maternal-Fetal & Neonatal Medicine. 24(11). 1312–1316. 6 indexed citations

3.

Ohto, Hitoshi, Tsutomu Ishi‐i, Junichi Kitazawa, et al.. (2009). TRANSFUSION COMPLICATIONS: Declining hepatitis C virus (HCV) prevalence in pregnant women: impact of anti‐HCV screening of donated blood. Transfusion. 50(3). 693–700. 7 indexed citations

4.

Mochizuki, Kazuhiro, Hitoshi Ohto, Niro Ujiie, et al.. (2006). Hemolytic disease of the newborn due to anti‐Di^b: a case study and review of the literature. Transfusion. 46(3). 454–460. 13 indexed citations

5.

Ishi‐i, Tsutomu, Hitoshi Ohto, Hiromichi Ariga, et al.. (2005). Evolution in the hypervariable region of the hepatitis C virus in two infants infected by mother‐to‐infant transmission. Pediatrics International. 47(3). 278–285. 3 indexed citations

6.

Ohto, Hitoshi, et al.. (2003). Low frequency of observed anti‐HLA among transfused preterm infants. Transfusion. 43(5). 663–667. 6 indexed citations

7.

Ohto, Hitoshi, Niro Ujiie, Akira Sato, et al.. (2002). TT virus infection during childhood. Transfusion. 42(7). 892–898. 34 indexed citations

8.

Ariga, Hiromichi, Yuichi Endo, Niro Ujiie, et al.. (2001). Trp290Cys mutation of the FGFR2 gene in a patient with severe Pfeiffer syndrome type 2. Pediatrics International. 43(3). 293–295. 8 indexed citations

9.

Ohto, Hitoshi, et al.. (2000). Mother‐to‐infant transmission of GB virus type C/HGV. Transfusion. 40(6). 725–730. 25 indexed citations

10.

Ujiie, Niro, et al.. (1999). Lack of difference in cytomegalovirus transmission via the transfusion of filtered‐irradiated and nonfiltered‐irradiated blood to newborn infants in an endemic area. Transfusion. 39(2). 201–205. 17 indexed citations

11.

Fujimori, Keiya, Hidenori Akutsu, Hiromichi Ariga, et al.. (1999). Prenatal Diagnosis of Intrapericardial Teratoma: A Case Report. Journal of obstetrics and gynaecology research. 25(2). 133–136. 17 indexed citations

12.

Ohto, Hitoshi, Sousuke Terazawa, Nobuhiko Sasaki, et al.. (1994). Transmission of Hepatitis C Virus From Mothers to Infants. Obstetrical & Gynecological Survey. 49(8). 536–537. 54 indexed citations

13.

Ohto, Hitoshi, Sousuke Terazawa, Nobuhiko Sasaki, et al.. (1994). Transmission of Hepatitis C Virus from Mothers to Infants. New England Journal of Medicine. 330(11). 744–750. 473 indexed citations breakdown →

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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