H. Ewald

5.3k total citations · 1 hit paper
75 papers, 3.3k citations indexed

About

H. Ewald is a scholar working on Genetics, Psychiatry and Mental health and Molecular Biology. According to data from OpenAlex, H. Ewald has authored 75 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Genetics, 22 papers in Psychiatry and Mental health and 14 papers in Molecular Biology. Recurrent topics in H. Ewald's work include Genetics and Neurodevelopmental Disorders (25 papers), Bipolar Disorder and Treatment (14 papers) and Genetic Associations and Epidemiology (13 papers). H. Ewald is often cited by papers focused on Genetics and Neurodevelopmental Disorders (25 papers), Bipolar Disorder and Treatment (14 papers) and Genetic Associations and Epidemiology (13 papers). H. Ewald collaborates with scholars based in Denmark, Slovenia and United Kingdom. H. Ewald's co-authors include Ole Mors, Preben Bo Mortensen, Mads Melbye, Carsten Bøcker Pedersen, Esben Agerbo, Majella Byrne, William W. Eaton, Marlene Briciet Lauritsen, Torben A. Kruse and Jan Wohlfahrt and has published in prestigious journals such as New England Journal of Medicine, American Journal of Psychiatry and The British Journal of Psychiatry.

In The Last Decade

H. Ewald

75 papers receiving 3.2k 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.

Effects of Family History and Place and Season of Birth on the Risk of Schizophrenia

1999 566 citations Preben Bo Mortensen, Carsten Bøcker Pedersen 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
H. Ewald Denmark	30	1.3k	1.2k	617	469	457	75	3.3k
Bryan Mowry Australia	35	1.0k 0.8×	1.3k 1.1×	991 1.6×	696 1.5×	878 1.9×	128	4.1k
Lynn E. DeLisi United States	32	1.2k 0.9×	1.0k 0.9×	624 1.0×	639 1.4×	1.2k 2.5×	100	3.9k
Carlos N. Pato United States	30	948 0.8×	996 0.8×	954 1.5×	516 1.1×	304 0.7×	97	3.2k
John A. McGrath United States	33	1.1k 0.9×	884 0.8×	708 1.1×	401 0.9×	314 0.7×	93	3.5k
Paula Wolyniec United States	29	1.2k 0.9×	1.6k 1.3×	1.4k 2.2×	379 0.8×	464 1.0×	54	3.6k
Evangelos Vassos United Kingdom	25	983 0.8×	1.0k 0.9×	586 0.9×	532 1.1×	393 0.9×	69	3.2k
Miron Baron United States	30	1.6k 1.2×	1.3k 1.1×	598 1.0×	882 1.9×	412 0.9×	91	3.4k
Ann E. Pulver United States	32	985 0.8×	1.1k 0.9×	991 1.6×	333 0.7×	515 1.1×	54	2.9k
Yuji Okazaki Japan	34	913 0.7×	557 0.5×	703 1.1×	835 1.8×	849 1.9×	179	3.7k
James P. MacMurray United States	33	1.0k 0.8×	1.1k 0.9×	913 1.5×	800 1.7×	477 1.0×	72	4.1k

Countries citing papers authored by H. Ewald

Since Specialization

Citations

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

Fields of papers citing papers by H. Ewald

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H. Ewald

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

Wang, August G., Hans A. Dahl, Maria Louison Vang, et al.. (2006). Genetics of panic disorder on the Faroe Islands: a replication study of chromosome 9 and panic disorder. Psychiatric Genetics. 16(3). 99–104. 5 indexed citations

Teruel, Beatríz Marcheco, Tracey Flint, Friedrik P. Wikman, et al.. (2006). A genome‐wide linkage search for bipolar disorder susceptibility loci in a large and complex pedigree from the eastern part of Cuba. American Journal of Medical Genetics Part B Neuropsychiatric Genetics. 141B(8). 833–843. 21 indexed citations

Lauritsen, Marlene Briciet, Thomas D. Als, Hans A. Dahl, et al.. (2005). A genome-wide search for alleles and haplotypes associated with autism and related pervasive developmental disorders on the Faroe Islands. Molecular Psychiatry. 11(1). 37–46. 63 indexed citations

Buttenschøn, Henriette N., Leslie Foldager, Walter Muir, et al.. (2005). Mutational screening and association study of glutamate decarboxylase 1 as a candidate susceptibility gene for bipolar affective disorder and schizophrenia. American Journal of Medical Genetics Part B Neuropsychiatric Genetics. 135B(1). 94–101. 39 indexed citations

Visscher, Peter M., Chris Haley, H. Ewald, et al.. (2004). Joint multi‐population analysis for genetic linkage of bipolar disorder or “wellness” to chromosome 4p. American Journal of Medical Genetics Part B Neuropsychiatric Genetics. 133B(1). 18–24. 4 indexed citations

Als, Thomas D., Hans A. Dahl, Tracey Flint, et al.. (2003). Possible evidence for a common risk locus for bipolar affective disorder and schizophrenia on chromosome 4p16 in patients from the Faroe Islands. Molecular Psychiatry. 9(1). 93–98. 28 indexed citations

Byrne, Majella, Esben Agerbo, H. Ewald, William W. Eaton, & Preben Bo Mortensen. (2003). Parental Age and Risk of Schizophrenia. Archives of General Psychiatry. 60(7). 673–673. 155 indexed citations

Lauritsen, Marlene Briciet, Ole Mors, Preben Bo Mortensen, & H. Ewald. (2002). Medical Disorders Among Inpatients with Autism in Denmark According to ICD-8: A Nationwide Register-Based Study. Journal of Autism and Developmental Disorders. 32(2). 115–119. 43 indexed citations

Nielsen, Annette, Preben Bo Mortensen, E. O’Callaghan, Ole Mors, & H. Ewald. (2002). Is head injury a risk factor for schizophrenia?. Schizophrenia Research. 55(1-2). 93–98. 41 indexed citations

10.

Del‐Favero, Jurgen, Sofie Van Gestel, Anders D. Børglum, et al.. (2002). European combined analysis of the CTG18.1 and the ERDA1 CAG/CTG repeats in bipolar disorder. European Journal of Human Genetics. 10(4). 276–280. 21 indexed citations

11.

Ewald, H., Preben Bo Mortensen, & Ole Mors. (2001). Decreased risk of acute appendicitis in patients with schizophrenia or manic-depressive psychosis. Schizophrenia Research. 49(3). 287–293. 10 indexed citations

12.

Mors, Ole, Preben Bo Mortensen, & H. Ewald. (2000). No evidence of increased risk for schizophrenia or bipolar disorder in persons with aneuploidies of the sex chromosomes. American Journal of Medical Genetics Part A. 96(4). 553–5547. 1 indexed citations

13.

Fink, Per, H. Ewald, Jørgen Bjerggaard Jensen, et al.. (1999). Screening for somatization and hypochondriasis in primary care and neurological in-patients. Journal of Psychosomatic Research. 46(3). 261–273. 258 indexed citations

14.

Mortensen, Preben Bo, Carsten Bøcker Pedersen, Tine Westergaard, et al.. (1999). Effects of Family History and Place and Season of Birth on the Risk of Schizophrenia. New England Journal of Medicine. 340(8). 603–608. 566 indexed citations breakdown →

15.

Mors, Ole, Preben Bo Mortensen, & H. Ewald. (1999). A population-based register study of the association between schizophrenia and rheumatoid arthritis. Schizophrenia Research. 40(1). 67–74. 54 indexed citations

16.

Ewald, H.. (1998). A functional variant of the serotonin transporter gene in families with bipolar affective disorder. Journal of Affective Disorders. 48(2-3). 135–144. 18 indexed citations

17.

Friedrich, Ursula, Ole Mors, & H. Ewald. (1996). Systematic chromosome examination of two families with schizophrenia and two families with manic depressive illness. American Journal of Medical Genetics. 67(1). 58–62. 4 indexed citations

18.

Ewald, H., et al.. (1995). A possible locus for manic depressive illness on chromosome 16p13. Psychiatric Genetics. 5(2). 71–82. 41 indexed citations

19.

Eiberg, Hans, H. Ewald, & Ole Mors. (1993). Suggestion of linkage between manic‐depressive illness and the enzyme phosphoglycolate phosphatase (PGP) on chromosome 16p. Clinical Genetics. 44(5). 254–257. 8 indexed citations

20.

Hansen, Ebbe Stender, Karsten Fogh, Vibeke E. Hjortdal, et al.. (1990). Synovitis reduced by inhibition of leukotriene B₄: Carragheenan-induced gonarthritis studied in dogs. Acta Orthopaedica Scandinavica. 61(3). 207–212. 8 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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