Nils Janzen

1.5k total citations
62 papers, 1.1k citations indexed

About

Nils Janzen is a scholar working on Clinical Biochemistry, Molecular Biology and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Nils Janzen has authored 62 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 45 papers in Clinical Biochemistry, 24 papers in Molecular Biology and 20 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Nils Janzen's work include Metabolism and Genetic Disorders (45 papers), Neonatal Health and Biochemistry (16 papers) and Amino Acid Enzymes and Metabolism (11 papers). Nils Janzen is often cited by papers focused on Metabolism and Genetic Disorders (45 papers), Neonatal Health and Biochemistry (16 papers) and Amino Acid Enzymes and Metabolism (11 papers). Nils Janzen collaborates with scholars based in Germany, United States and Switzerland. Nils Janzen's co-authors include Johannes Sander, Stefanie Sander, Michael Terhardt, Michael Peter, Ulrike Steuerwald, Anibh M. Das, Gillian R. Goward, Ute Holtkamp, Allan M. Lund and Jan Rasmussen and has published in prestigious journals such as PLoS ONE, The Journal of Clinical Endocrinology & Metabolism and PEDIATRICS.

In The Last Decade

Nils Janzen

60 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nils Janzen Germany 19 534 491 273 164 120 62 1.1k
James D. Shoemaker United States 16 222 0.4× 347 0.7× 37 0.1× 55 0.3× 56 0.5× 34 864
Sándor Túri Hungary 18 82 0.2× 299 0.6× 67 0.2× 159 1.0× 61 0.5× 56 1.1k
A.F. Hofmann United States 21 113 0.2× 365 0.7× 89 0.3× 233 1.4× 63 0.5× 44 1.8k
Bianca Maria Goffredo Italy 21 158 0.3× 457 0.9× 22 0.1× 128 0.8× 70 0.6× 78 1.3k
Hiroshi Akanuma Japan 25 130 0.2× 870 1.8× 690 2.5× 18 0.1× 258 2.1× 63 1.7k
Maren Mieth Germany 26 46 0.1× 699 1.4× 52 0.2× 138 0.8× 88 0.7× 46 1.8k
C. A. Pennock United Kingdom 21 130 0.2× 332 0.7× 220 0.8× 128 0.8× 120 1.0× 71 1.3k
Dimitri Schlemmer France 17 256 0.5× 839 1.7× 16 0.1× 34 0.2× 41 0.3× 25 1.1k
Esther Bettiol Switzerland 17 223 0.4× 738 1.5× 15 0.1× 59 0.4× 65 0.5× 25 1.4k
Anna Casu Italy 19 104 0.2× 530 1.1× 356 1.3× 28 0.2× 622 5.2× 86 1.6k

Countries citing papers authored by Nils Janzen

Since Specialization
Citations

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

Fields of papers citing papers by Nils Janzen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nils Janzen

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

All Works

20 of 20 papers shown
1.
Höppe, Bernd, et al.. (2024). Effective Newborn Screening for Type 1 and 3 Primary Hyperoxaluria. Kidney International Reports. 10(1). 177–183. 2 indexed citations
2.
Mütze, Ulrike, Florian Gleich, Dorothea Haas, et al.. (2024). Vitamin B12 Deficiency Newborn Screening. PEDIATRICS. 154(2). 2 indexed citations
3.
Das, Anibh M., Diana Ballhausen, Dorothea Haas, et al.. (2024). Diagnosis, treatment, management and monitoring of patients with tyrosinaemia type 1: Consensus group recommendations from the German‐speaking countries. Journal of Inherited Metabolic Disease. 48(1). e12824–e12824. 3 indexed citations
4.
Okun, Jürgen G., Dirk Kohlmüller, Georgi Manukjan, et al.. (2024). Newborn screening for aromatic l-amino acid decarboxylase deficiency – Strategies, results, and implication for prevalence calculations. Molecular Genetics and Metabolism. 141(3). 108148–108148. 3 indexed citations
5.
Janda, Joachim, Ute Holtkamp, Siegfried Burggraf, et al.. (2023). High Throughput Newborn Screening for Sickle Cell Disease – Application of Two-Tiered Testing with a qPCR-Based Primary screen. Klinische Pädiatrie. 235(6). 366–372. 5 indexed citations
6.
Janzen, Nils & Johannes Sander. (2023). Entwicklung der Analytik im Neugeborenen-Screening – Von der Guthrie-Karte zur Genetik. Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz. 66(11). 1214–1221.
7.
Janzen, Nils, Jan Fuge, Christian Klemann, et al.. (2022). The First 4 Years – Outcome of Children Identified by Newborn Screening for CF in Germany. Klinische Pädiatrie. 234(5). 284–292. 3 indexed citations
8.
Mütze, Ulrike, Uta Nennstiel, Claudia M. Haase, et al.. (2022). Sudden neonatal death in individuals with medium-chain acyl-coenzyme A dehydrogenase deficiency: limit of newborn screening. European Journal of Pediatrics. 181(6). 2415–2422. 10 indexed citations
9.
Sander, Johannes, Michael Terhardt, & Nils Janzen. (2020). Detection of maple toxins in mare's milk. Journal of Veterinary Internal Medicine. 35(1). 606–609. 9 indexed citations
10.
Sander, Johannes, et al.. (2019). A new method for quantifying causative and diagnostic markers of methylenecyclopropylglycine poisoning. Toxicology Reports. 6. 803–808. 8 indexed citations
11.
Sander, Johannes, Joerg Ziegler, Michael Terhardt, et al.. (2019). Detection of MCPG metabolites in horses with atypical myopathy. PLoS ONE. 14(2). e0211698–e0211698. 21 indexed citations
12.
Rasmussen, Jan, Olav Wendelboe Nielsen, Nils Janzen, et al.. (2013). Carnitine levels in 26,462 individuals from the nationwide screening program for primary carnitine deficiency in the Faroe Islands. Journal of Inherited Metabolic Disease. 37(2). 215–222. 64 indexed citations
13.
Janzen, Nils, Michael Terhardt, Stefanie Sander, et al.. (2013). Towards newborn screening for ornithine transcarbamylase deficiency: Fast non-chromatographic orotic acid quantification from dried blood spots by tandem mass spectrometry. Clinica Chimica Acta. 430. 28–32. 14 indexed citations
14.
Janzen, Nils, Felix G. Riepe, Michael Peter, et al.. (2012). Neonatal Screening: Identification of Children with 11β-Hydroxylase Deficiency by Second-Tier Testing. Hormone Research in Paediatrics. 77(3). 195–199. 23 indexed citations
15.
Illsinger, Sabine, Nils Janzen, Stefanie Sander, et al.. (2011). Energy metabolism in umbilical endothelial cells from preterm and term neonates. Journal of Perinatal Medicine. 39(5). 587–93. 3 indexed citations
16.
Sander, Johannes, Nils Janzen, Michael Terhardt, et al.. (2010). Monitoring tyrosinaemia type I: Blood spot test for nitisinone (NTBC). Clinica Chimica Acta. 412(1-2). 134–138. 23 indexed citations
17.
Janzen, Nils, Stefanie Sander, Michael Terhardt, et al.. (2010). Rapid quantification of conjugated and unconjugated bile acids and C27 precursors in dried blood spots and small volumes of serum. Journal of Lipid Research. 51(6). 1591–1598. 21 indexed citations
18.
Peter, Michael, Nils Janzen, Stefanie Sander, et al.. (2008). A Case of 11β-Hydroxylase Deficiency Detected in a Newborn Screening Program by Second-Tier LC-MS/MS. Hormone Research in Paediatrics. 69(4). 253–256. 19 indexed citations
19.
Janzen, Nils, Stefanie Sander, Michael Terhardt, Michael Peter, & Johannes Sander. (2007). Fast and direct quantification of adrenal steroids by tandem mass spectrometry in serum and dried blood spots. Journal of Chromatography B. 861(1). 117–122. 94 indexed citations
20.
Sander, Johannes, Nils Janzen, Stefanie Sander, et al.. (2003). Neonatal screening for citrullinaemia. European Journal of Pediatrics. 162(6). 417–420. 32 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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