N M Hjelm

8.1k total citations · 4 hit papers
45 papers, 5.8k citations indexed

About

N M Hjelm is a scholar working on Molecular Biology, Public Health, Environmental and Occupational Health and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, N M Hjelm has authored 45 papers receiving a total of 5.8k indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Molecular Biology, 10 papers in Public Health, Environmental and Occupational Health and 9 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in N M Hjelm's work include Prenatal Screening and Diagnostics (8 papers), Telemedicine and Telehealth Implementation (6 papers) and Healthcare Systems and Technology (4 papers). N M Hjelm is often cited by papers focused on Prenatal Screening and Diagnostics (8 papers), Telemedicine and Telehealth Implementation (6 papers) and Healthcare Systems and Technology (4 papers). N M Hjelm collaborates with scholars based in Hong Kong, China and United Kingdom. N M Hjelm's co-authors include Yuk Ming Dennis Lo, Tse Ngong Leung, Tze Kin Lau, Allan Chang, James S. Wainscoat, Priscilla M.K. Poon, Lisa Chan, Philip E. Johnson, Mark Tein and Jun Zhang and has published in prestigious journals such as New England Journal of Medicine, Annals of Surgery and Cochrane Database of Systematic Reviews.

In The Last Decade

N M Hjelm

45 papers receiving 5.6k 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.

Quantitative Analysis of Fetal DNA in Maternal Plasma and Serum: Implications for Noninvasive Prenatal Diagnosis

1998 1.3k citations Yuk Ming Dennis Lo, Mark Tein et al. The American Journal of Human Genetics profile →
Rapid Clearance of Fetal DNA from Maternal Plasma

1999 861 citations Yuk Ming Dennis Lo, Jun Zhang et al. The American Journal of Human Genetics profile →
Quantitative analysis of cell-free Epstein-Barr virus DNA in plasma of patients with nasopharyngeal carcinoma.

1999 626 citations Lisa Chan, Kwok Wai Lo et al. PubMed profile →
Prenatal Diagnosis of Fetal RhD Status by Molecular Analysis of Maternal Plasma

1998 534 citations N M Hjelm, Priscilla M.K. Poon et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
N M Hjelm Hong Kong	21	2.4k	1.8k	1.5k	1.3k	1.2k	45	5.8k
Matt Hayat United States	5	766 0.3×	1.3k 0.7×	956 0.7×	3.3k 2.6×	129 0.1×	6	7.9k
Bruce Bostrom United States	44	1.9k 0.8×	1.2k 0.6×	264 0.2×	1.1k 0.8×	302 0.2×	129	6.0k
Lowell E. Schnipper United States	42	664 0.3×	1.0k 0.6×	735 0.5×	3.0k 2.3×	177 0.1×	120	7.2k
Ian Magrath United States	53	1.1k 0.5×	1.9k 1.1×	633 0.4×	5.1k 3.9×	490 0.4×	173	9.7k
Jacob M. Rowe Israel	59	1.6k 0.7×	3.0k 1.6×	567 0.4×	3.0k 2.3×	345 0.3×	317	12.9k
Salomon M. Stemmer Israel	46	313 0.1×	2.0k 1.1×	1.7k 1.1×	5.0k 3.9×	338 0.3×	237	8.5k
D M Parkin United Kingdom	30	482 0.2×	915 0.5×	607 0.4×	2.7k 2.1×	103 0.1×	53	6.2k
Ted Gooley United States	73	1.4k 0.6×	1.9k 1.0×	405 0.3×	4.9k 3.8×	831 0.7×	322	18.3k
Joyce C. Niland United States	50	402 0.2×	641 0.3×	1.6k 1.1×	3.5k 2.7×	309 0.3×	160	8.4k
Jeff Szer Australia	58	936 0.4×	1.5k 0.8×	196 0.1×	3.5k 2.7×	1.0k 0.8×	385	15.3k

Countries citing papers authored by N M Hjelm

Since Specialization

Citations

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

Fields of papers citing papers by N M Hjelm

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by N M Hjelm. 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 N M Hjelm. The network helps show where N M Hjelm may publish in the future.

Co-authorship network of co-authors of N M Hjelm

This figure shows the co-authorship network connecting the top 25 collaborators of N M Hjelm. A scholar is included among the top collaborators of N M Hjelm 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 N M Hjelm. N M Hjelm 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:

20 of 20 papers shown

Mann, D V, Chung Shun Ho, Lester A. H. Critchley, et al.. (2006). Affordable measurement of human total energy expenditure and body composition using one-tenth dose doubly labelled water. International Journal of Obesity. 31(5). 751–755. 4 indexed citations

Hjelm, N M. (2005). Benefits and drawbacks of telemedicine. Journal of Telemedicine and Telecare. 11(2). 60–70. 338 indexed citations

Hjelm, N M, et al.. (2002). Wiring a medical school and teaching hospital for telemedicine. International Journal of Medical Informatics. 65(2). 161–166. 1 indexed citations

Mann, D V, Wynnie W.M. Lam, N M Hjelm, et al.. (2002). Metabolic Control Patterns in Acute Phase and Regenerating Human Liver Determined In Vivo by 31-Phosphorus Magnetic Resonance Spectroscopy. Annals of Surgery. 235(3). 408–416. 23 indexed citations

Hjelm, N M, et al.. (2001). Moving with the sun. International Journal of Medical Informatics. 61(2-3). 97–101. 2 indexed citations

Hjelm, N M, et al.. (2001). Wiring a medical school and teaching hospital for telemedicine. International Journal of Medical Informatics. 61(2-3). 235–240. 3 indexed citations

Hjelm, N M, et al.. (2001). Telemedicine in China. International Journal of Medical Informatics. 61(2-3). 139–146. 27 indexed citations

Wong, Chun Kwok, et al.. (2000). Sodium Salicylate-Induced Apoptosis of Human Peripheral Blood Eosinophils Is Independent of the Activation of c-Jun N-Terminal Kinase and p38 Mitogen-Activated Protein Kinase. International Archives of Allergy and Immunology. 121(1). 44–52. 10 indexed citations

Tomaso, Emmanuelle di, Jesse Pang, Ho‐Keung Ng, et al.. (2000). Establishment and characterization of a human cell line from paediatric cerebellar glioblastoma multiforme. Neuropathology and Applied Neurobiology. 26(1). 22–30. 15 indexed citations

10.

Johnson, Pamela Jo, et al.. (2000). Structures of disease-specific serum alpha-fetoprotein isoforms. British Journal of Cancer. 83(10). 1330–1337. 67 indexed citations

11.

Wong, Chun Kwok, et al.. (1999). Differentiation of a human eosinophilic leukemic cell line, EoL-1: characterization by the expression of cytokine receptors, adhesion molecules, CD95 and eosinophilic cationic protein (ECP). Immunology Letters. 68(2-3). 317–323. 26 indexed citations

12.

Johnson, Philip E., Terence C. W. Poon, N M Hjelm, et al.. (1999). Glycan composition of serum alpha-fetoprotein in patients with hepatocellular carcinoma and non-seminomatous germ cell tumour. British Journal of Cancer. 81(7). 1188–1195. 47 indexed citations

13.

Lo, Yuk Ming Dennis, et al.. (1999). Quantitative analysis of aberrant p16 methylation using real-time quantitative methylation-specific polymerase chain reaction.. PubMed. 59(16). 3899–903. 171 indexed citations

14.

Lo, Yuk Ming Dennis, Jun Zhang, Tse Ngong Leung, et al.. (1999). Rapid Clearance of Fetal DNA from Maternal Plasma. The American Journal of Human Genetics. 64(1). 218–224. 861 indexed citations breakdown →

15.

Chan, Lisa, Kwok Wai Lo, S. F. Leung, et al.. (1999). Quantitative analysis of cell-free Epstein-Barr virus DNA in plasma of patients with nasopharyngeal carcinoma.. PubMed. 59(6). 1188–91. 626 indexed citations breakdown →

16.

Panesar, Nirmal S., et al.. (1998). Histochemical, clinical, and in vitro β cell responses in a neonate with persistent hyperinsulinaemic hypoglycaemia of infancy. Archives of Disease in Childhood Fetal & Neonatal. 79(2). F141–F144. 3 indexed citations

17.

Lam, Ching‐Wan, et al.. (1998). Glucose‐6‐phosphatase gene (727G→T) splicing mutation is prevalent in Hong Kong Chinese patients with glycogen storage disease type la. Clinical Genetics. 53(3). 184–190. 19 indexed citations

18.

Hjelm, N M, et al.. (1998). Planning criteria for multicentre, multilingual telemedicine conferences. Journal of Telemedicine and Telecare. 4(1). 47–55. 6 indexed citations

19.

Lo, Yuk Ming Dennis, Mark Tein, Tze Kin Lau, et al.. (1998). Quantitative Analysis of Fetal DNA in Maternal Plasma and Serum: Implications for Noninvasive Prenatal Diagnosis. The American Journal of Human Genetics. 62(4). 768–775. 1262 indexed citations breakdown →

20.

Ersser, R. S., et al.. (1991). Automated quantitative microcolumn chromatography of haemoglobin A₂. Biomedical Chromatography. 5(5). 226–228. 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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