Christian Grah

1.5k total citations
68 papers, 522 citations indexed

About

Christian Grah is a scholar working on Pulmonary and Respiratory Medicine, Oncology and Immunology. According to data from OpenAlex, Christian Grah has authored 68 papers receiving a total of 522 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Pulmonary and Respiratory Medicine, 18 papers in Oncology and 12 papers in Immunology. Recurrent topics in Christian Grah's work include Chronic Obstructive Pulmonary Disease (COPD) Research (18 papers), Toxin Mechanisms and Immunotoxins (12 papers) and Respiratory Support and Mechanisms (8 papers). Christian Grah is often cited by papers focused on Chronic Obstructive Pulmonary Disease (COPD) Research (18 papers), Toxin Mechanisms and Immunotoxins (12 papers) and Respiratory Support and Mechanisms (8 papers). Christian Grah collaborates with scholars based in Germany, Austria and Australia. Christian Grah's co-authors include Friedemann Schad, Anja Thronicke, Megan L. Steele, Harald Matthes, Thomas Mairinger, Franz Stanzel, Wolfgang Gesierich, W Grüning, Torsten Bauer and Christoph Petermann and has published in prestigious journals such as PLoS ONE, International Journal of Molecular Sciences and Annals of Oncology.

In The Last Decade

Christian Grah

53 papers receiving 511 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Christian Grah Germany 12 333 121 76 67 39 68 522
Naofumi Kameyama Japan 12 203 0.6× 63 0.5× 81 1.1× 34 0.5× 7 0.2× 26 419
Maria Gemelli Italy 10 111 0.3× 87 0.7× 63 0.8× 23 0.3× 13 0.3× 49 362
Tianwang Guan China 12 54 0.2× 40 0.3× 100 1.3× 32 0.5× 39 1.0× 39 517
Duc Ha United States 13 238 0.7× 161 1.3× 73 1.0× 20 0.3× 4 0.1× 34 487
P. G. Toner United Kingdom 9 75 0.2× 47 0.4× 90 1.2× 24 0.4× 9 0.2× 16 463
Eva Martínez de Castro Spain 12 97 0.3× 171 1.4× 26 0.3× 5 0.1× 25 0.6× 46 392
T.I. Christmas New Zealand 8 482 1.4× 168 1.4× 101 1.3× 52 0.8× 11 681
Nam Phuong Tran United States 8 51 0.2× 44 0.4× 61 0.8× 55 0.8× 8 0.2× 9 398
Hirsh Koyi Sweden 12 285 0.9× 201 1.7× 59 0.8× 12 0.2× 33 519
Steve Chin United States 10 41 0.1× 154 1.3× 61 0.8× 99 1.5× 15 396

Countries citing papers authored by Christian Grah

Since Specialization
Citations

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

Fields of papers citing papers by Christian Grah

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Christian Grah

This figure shows the co-authorship network connecting the top 25 collaborators of Christian Grah. A scholar is included among the top collaborators of Christian Grah 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 Christian Grah. Christian Grah 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.
Grah, Christian, Shiao Li Oei, Ralf‐Harto Hübner, et al.. (2025). Efficacy and Safety of Lung Volume Reduction with Endobronchial Coil #2 and Coil #4 Results of the German Emphysema Registry—Lungenemphysemregister e.V.. COPD Journal of Chronic Obstructive Pulmonary Disease. 22(1). 2468328–2468328. 1 indexed citations
2.
3.
Grah, Christian, et al.. (2025). Pneumologie im Klimawandel. Pneumologie. 79(12). 943–948.
4.
Sebastian, Martin, Wilfried Eberhardt, Steffen Dörfel, et al.. (2024). Patient‐reported outcomes in advanced NSCLC before and during the COVID‐19 pandemic: Real‐world data from the German prospective CRISP Registry (AIO‐TRK‐0315). International Journal of Cancer. 154(11). 1967–1978.
5.
Schad, Friedemann, Anja Thronicke, Ralf‐Dieter Hofheinz, Harald Matthes, & Christian Grah. (2024). Patients with Advanced or Metastasised Non-Small-Cell Lung Cancer with Viscum album L. Therapy in Addition to PD-1/PD-L1 Blockade: A Real-World Data Study. Cancers. 16(8). 1609–1609. 3 indexed citations
6.
Ahrens, Katharina, U. Klein, Martin Witzenrath, et al.. (2024). Comparison of Efficacy and Safety of Different Types of One-Way Valves in Endoscopic Lung Volume Reduction in Patients with Severe Lung Emphysema. Respiration. 104(4). 281–289.
7.
Schmiemann, Guido, et al.. (2024). Klimabewusste Verordnung von Inhalativa – Umsetzung in der hausärztlichen Praxis. Zeitschrift für Allgemeinmedizin. 100(3). 136–141. 1 indexed citations
8.
9.
Fleischhacker, Michael, Gerit Theil, Jens Kollmeier, et al.. (2023). Cell-Free Methylated PTGER4 and SHOX2 Plasma DNA as a Biomarker for Therapy Monitoring and Prognosis in Advanced Stage NSCLC Patients. Diagnostics. 13(13). 2131–2131. 1 indexed citations
10.
Pohrt, Anne, Christian Grah, Stephan Eisenmann, et al.. (2022). Impact of COVID-19 on Hospital Admissions, Health Status and Behavioral Changes of Patients with COPD. SSRN Electronic Journal. 1 indexed citations
11.
12.
Lenga, Pavlina, Christoph Ruwwe‐Glösenkamp, Christian Grah, et al.. (2020). Endoscopic lung volume reduction with endobronchial valves in very lowDLCOpatients: results from the German Registry – Lungenemphysemregister e.V.. ERJ Open Research. 7(1). 449–2020. 12 indexed citations
13.
Darwiche, Kaid, Wolfgang Gesierich, Christoph Petermann, et al.. (2020). Empfehlungen zur Durchführung einer Bronchoskopie in Zeiten der COVID-19-Pandemie: Update 12/2020. Pneumologie. 75(3). 187–190. 5 indexed citations
14.
Hübner, Ralf‐Harto, Christoph Ruwwe‐Glösenkamp, Pavlina Lenga, et al.. (2020). Endoscopic Lung Volume Reduction: Can Endobronchial Valves Be Safely Removed?. Respiration. 99(5). 459–460. 5 indexed citations
15.
Kollmeier, Jens, Alexander Schmittel, B. Schmidt, et al.. (2019). Pembrolizumab as first-line treatment in NSCLC with PD-L1 ≥50%: Real life results from an all-comer population. Annals of Oncology. 30. v615–v615. 2 indexed citations
16.
Klein, Sabine D., et al.. (2018). Speech-guided breathing retraining in asthma: a randomised controlled crossover trial in real-life outpatient settings. Trials. 19(1). 333–333. 4 indexed citations
17.
Thronicke, Anja, et al.. (2017). P3.02c-037 Clinical Safety of Combinational Therapy of Immune Checkpoint Inhibitors and Viscum Album L. in Patients with Advanced or Metastasized Cancer. Journal of Thoracic Oncology. 12(1). S1295–S1296. 2 indexed citations
18.
Herth, Felix, Arschang Valipour, Pallav L. Shah, et al.. (2016). Segmental volume reduction using thermal vapour ablation in patients with severe emphysema: 6-month results of the multicentre, parallel-group, open-label, randomised controlled STEP-UP trial. The Lancet Respiratory Medicine. 4(3). 185–193. 111 indexed citations
19.
Grah, Christian, et al.. (2014). Benefit of steroid-free treatment compared to standard therapy (ST) in pulmonary sarcoidosis. European Respiratory Journal. 44(Suppl 58). P3765–P3765. 1 indexed citations
20.

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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