H Hager

845 total citations
42 papers, 615 citations indexed

About

H Hager is a scholar working on Physiology, Surgery and Ophthalmology. According to data from OpenAlex, H Hager has authored 42 papers receiving a total of 615 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Physiology, 7 papers in Surgery and 6 papers in Ophthalmology. Recurrent topics in H Hager's work include Folate and B Vitamins Research (6 papers), Glaucoma and retinal disorders (5 papers) and Neonatal Health and Biochemistry (4 papers). H Hager is often cited by papers focused on Folate and B Vitamins Research (6 papers), Glaucoma and retinal disorders (5 papers) and Neonatal Health and Biochemistry (4 papers). H Hager collaborates with scholars based in Norway, Sweden and Germany. H Hager's co-authors include Jo Røislien, Dag Hofsø, Jøran Hjelmesæth, Trond Jenssen, Jens Bollerslev, Njord Nordstrand, Kristin Godang, Erlend T. Aasheim, Johan Moan and Rune Sandbu and has published in prestigious journals such as Blood, European Journal of Endocrinology and Obesity Surgery.

In The Last Decade

H Hager

35 papers receiving 570 citations

Peers

H Hager

PHYSI

SURGE

PFM

EDM

EPIDE

Riad A. Sulimani Saudi Arabia

Andrea Pota Italy

Vincenzo Frusciante Italy

Hüseyin Çeli̇ker Türkiye

Kenichiro Shide Japan

Okan Özcan Türkiye

H Balci Türkiye

Ayumi Sugawara Japan

Brian Hoar United States

Caroline M. Apovian United States

Riad A. Sulimani Saudi Arabia

H Hager

202 ×0.9

PHYSI

104 ×0.6

SURGE

125 ×0.9

PFM

262 ×2.9

EDM

77 ×0.9

EPIDE

Citations per year, relative to H Hager H Hager (= 1×) peers Riad A. Sulimani

Countries citing papers authored by H Hager

Since Specialization

Citations

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

Fields of papers citing papers by H Hager

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H Hager

This figure shows the co-authorship network connecting the top 25 collaborators of H Hager. A scholar is included among the top collaborators of H Hager 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 H Hager. H Hager 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

Hager, H, et al.. (2025). Reference intervals for holotranscobalamin and total vitamin B12 in 6–12-year-old children in Norway: the Health Oriented Pedagogical Project (HOPP). Scandinavian Journal of Clinical and Laboratory Investigation. 85(2). 138–142.

Ljungblad, Ulf, Lars Mørkrid, H Hager, et al.. (2022). Breastfed Infants With Spells, Tremor, or Irritability: Rule Out Vitamin B12 Deficiency. Pediatric Neurology. 131. 4–12. 12 indexed citations

Ljungblad, Ulf, Lars Mørkrid, Rolf D. Pettersen, et al.. (2021). The prevalence and clinical relevance of hyperhomocysteinemia suggesting vitamin B12 deficiency in presumed healthy infants. European Journal of Paediatric Neurology. 35. 137–146. 19 indexed citations

Sølvik, Una Ørvim, et al.. (2017). Intensive educational efforts combined with external quality assessment improve the preanalytical phase in general practitioner offices and nursing homes. Clinical Chemistry and Laboratory Medicine (CCLM). 55(12). 1857–1864. 6 indexed citations

Hager, H, et al.. (2015). En kvinne i 60-årene med store trombemasser i aorta. Tidsskrift for Den norske legeforening. 135(20). 1853–1857.

Aakre, Kristin M., et al.. (2013). Varsling av sterkt avvikende analyseresultater til rekvirenter utenfor sykehus. Tidsskrift for Den norske legeforening. 133(21). E1–6. 3 indexed citations

Meberg, Alf, et al.. (2010). Endring i diagnostikk og behandling av hyperbilirubinemi hos nyfødte. Tidsskrift for Den norske legeforening. 130(1). 18–20. 4 indexed citations

Hofsø, Dag, Njord Nordstrand, Line Kristin Johnson, et al.. (2010). Obesity-related cardiovascular risk factors after weight loss: a clinical trial comparing gastric bypass surgery and intensive lifestyle intervention. European Journal of Endocrinology. 163(5). 735–745. 147 indexed citations

Hjelmesæth, Jøran, Jo Røislien, Njord Nordstrand, et al.. (2010). Low serum creatinine is associated with type 2 diabetes in morbidly obese women and men: a cross-sectional study. BMC Endocrine Disorders. 10(1). 6–6. 48 indexed citations

10.

Aakre, Kristin M., et al.. (2009). Validation of the Hemo_Control instrument for determination of B-haemoglobin concentration in primary health care. Scandinavian Journal of Clinical and Laboratory Investigation. 69(8). 817–821. 2 indexed citations

11.

Hofsø, Dag, Thor Ueland, H Hager, et al.. (2009). Inflammatory mediators in morbidly obese subjects: associations with glucose abnormalities and changes after oral glucose. European Journal of Endocrinology. 161(3). 451–458. 43 indexed citations

12.

Hofsø, Dag, Trond Jenssen, H Hager, Jo Røislien, & Jøran Hjelmesæth. (2009). Fasting Plasma Glucose in the Screening for Type 2 Diabetes in Morbidly Obese Subjects. Obesity Surgery. 20(3). 302–307. 35 indexed citations

13.

Hjelmesæth, Jøran, Dag Hofsø, Erlend T. Aasheim, et al.. (2009). Parathyroid hormone, but not vitamin D, is associated with the metabolic syndrome in morbidly obese women and men: a cross-sectional study. Cardiovascular Diabetology. 8(1). 7–7. 133 indexed citations

14.

Rakover, Yardena, et al.. (1994). Celiac Disease as a Cause of Transient Hypocalcemia and Hypovitaminosis D in a 13 Year-Old Girl. Journal of Pediatric Endocrinology and Metabolism. 7(1). 53–56. 11 indexed citations

15.

Hager, H, et al.. (1988). Familial Achalasia with Absent Tear Production. Journal of Pediatric Gastroenterology and Nutrition. 7(2). 284–287. 14 indexed citations

16.

Hoffmann, Friedrich, Laura Dumitrescu, & H Hager. (1975). [Pigment glaucoma. Scanning-electronmicroscopic findings. (author's transl)].. PubMed. 166(5). 609–13. 7 indexed citations

17.

Hager, H. (1975). [Lasermicrosurgery in glaucoma (Lasertrabeculopuncture I1LTP], tangential irisbasecoagulation [TLC], removal of miosis and shifting of pupils) (author's transl)].. PubMed. 167(1). 18–27. 2 indexed citations

18.

Hager, H. (1958). [Treatment of glaucoma with miotics; principles, regulation technics & successful outlook].. PubMed. 1–123. 2 indexed citations

19.

Hager, H, et al.. (1955). Kernicterus; hypoxemia, significant pathogenic factor.. PubMed. 73(3). 293–301. 4 indexed citations

20.

Nieth, H., et al.. (1954). Diätetische und medikamentöse Behandlung des Hochdrucks. Basic Research in Cardiology. 21(1-4). 11–40. 5 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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