Leif Schiffmann

857 total citations
29 papers, 635 citations indexed

About

Leif Schiffmann is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Leif Schiffmann has authored 29 papers receiving a total of 635 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 16 papers in Oncology and 14 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Leif Schiffmann's work include Colorectal Cancer Surgical Treatments (14 papers), Colorectal and Anal Carcinomas (9 papers) and Esophageal and GI Pathology (7 papers). Leif Schiffmann is often cited by papers focused on Colorectal Cancer Surgical Treatments (14 papers), Colorectal and Anal Carcinomas (9 papers) and Esophageal and GI Pathology (7 papers). Leif Schiffmann collaborates with scholars based in Germany, United Kingdom and Switzerland. Leif Schiffmann's co-authors include E. Klar, Michael Gock, Florian Kuehn, Friedrich Prall, Gunnar Loske, Florian Janisch, Guido Alsfasser, Bettina Rau, Matthias Kalder and Karel Kostev and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and Breast Cancer Research and Treatment.

In The Last Decade

Leif Schiffmann

29 papers receiving 618 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Leif Schiffmann Germany 14 428 294 233 119 58 29 635
Federica De Lucia Italy 10 165 0.4× 100 0.3× 99 0.4× 85 0.7× 24 0.4× 12 488
C. Caillard France 16 447 1.0× 112 0.4× 185 0.8× 267 2.2× 80 1.4× 42 687
Andrzej J. Łachiński Poland 12 227 0.5× 105 0.4× 79 0.3× 52 0.4× 33 0.6× 38 454
Kyung Hwa Choi South Korea 14 262 0.6× 304 1.0× 71 0.3× 49 0.4× 18 0.3× 54 598
Herbert Chen United States 13 357 0.8× 159 0.5× 167 0.7× 392 3.3× 134 2.3× 41 638
S. Noullet France 10 472 1.1× 182 0.6× 291 1.2× 88 0.7× 31 0.5× 23 566
Rosebel Monteiro United States 10 178 0.4× 62 0.2× 83 0.4× 140 1.2× 46 0.8× 15 294
Anne Waage Norway 15 630 1.5× 520 1.8× 403 1.7× 15 0.1× 22 0.4× 46 876
Santo Calabria Italy 10 94 0.2× 102 0.3× 125 0.5× 322 2.7× 50 0.9× 12 477
Elaine Cheung Hong Kong 9 232 0.5× 60 0.2× 75 0.3× 62 0.5× 28 0.5× 11 502

Countries citing papers authored by Leif Schiffmann

Since Specialization
Citations

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

Fields of papers citing papers by Leif Schiffmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Leif Schiffmann

This figure shows the co-authorship network connecting the top 25 collaborators of Leif Schiffmann. A scholar is included among the top collaborators of Leif Schiffmann 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 Leif Schiffmann. Leif Schiffmann 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.
Schiffmann, Leif, Karel Kostev, & Matthias Kalder. (2020). Association between various thyroid gland diseases, TSH values and thyroid cancer: a case–control study. Journal of Cancer Research and Clinical Oncology. 146(11). 2989–2994. 13 indexed citations
2.
Kühn, Florian, Florian Janisch, Michael Gock, et al.. (2020). Comparison Between Endoscopic Vacuum Therapy and Conventional Treatment for Leakage After Rectal Resection. World Journal of Surgery. 44(4). 1277–1282. 24 indexed citations
3.
Bach, Laura, Karel Kostev, Leif Schiffmann, & Matthias Kalder. (2020). Association between thyroid gland diseases and breast cancer: a case–control study. Breast Cancer Research and Treatment. 182(1). 207–213. 26 indexed citations
4.
Schiffmann, Leif, Karel Kostev, & Matthias Kalder. (2019). Fecal and urinary incontinence are major problems associated with rectal cancer. International Journal of Colorectal Disease. 35(1). 35–40. 6 indexed citations
5.
Kuehn, Florian, Gunnar Loske, Leif Schiffmann, Michael Gock, & E. Klar. (2017). Endoscopic vacuum therapy for various defects of the upper gastrointestinal tract. Surgical Endoscopy. 31(9). 3449–3458. 104 indexed citations
6.
Schiffmann, Leif, et al.. (2016). PEG closure in the second attempt. SHILAP Revista de lepidopterología. 4(7). E759–E760. 1 indexed citations
7.
Prall, Friedrich, Oliver Schmitt, & Leif Schiffmann. (2015). Tumor regression in rectal cancer after intensified neoadjuvant chemoradiation: a morphometric and clinicopathological study. World Journal of Surgical Oncology. 13(1). 155–155. 5 indexed citations
8.
Kuehn, Florian, Leif Schiffmann, Florian Janisch, et al.. (2015). Surgical Endoscopic Vacuum Therapy for Defects of the Upper Gastrointestinal Tract. Journal of Gastrointestinal Surgery. 20(2). 237–243. 67 indexed citations
9.
Kuehn, Florian, Florian Janisch, Guido Alsfasser, et al.. (2015). Endoscopic Vacuum Therapy in Colorectal Surgery. Journal of Gastrointestinal Surgery. 20(2). 328–334. 42 indexed citations
10.
Schön, Michael P., R. Ruppert, H. Ptok, et al.. (2015). Spinktererhalt nach selektiver Radiochemotherapie des Rektumkarzinoms. Der Chirurg. 86(12). 1138–1144. 3 indexed citations
11.
Schiffmann, Leif, et al.. (2013). Is the lymph node ratio superior to the Union for International Cancer Control (UICC) TNM system in prognosis of colon cancer?. World Journal of Surgical Oncology. 11(1). 79–79. 17 indexed citations
12.
Schiffmann, Leif, Günther Klautke, Michael Gock, et al.. (2013). Prognosis of rectal cancer patients improves with downstaging by intensified neoadjuvant radiochemotherapy - a matched pair analysis. BMC Cancer. 13(1). 388–388. 6 indexed citations
13.
Schiffmann, Leif, Michael Gock, Friedrich Prall, et al.. (2013). Intensified neoadjuvant radiochemotherapy for rectal cancer enhances surgical complications. BMC Surgery. 13(1). 43–43. 23 indexed citations
14.
Weber, Theresia, Julia Eberle, Leif Schiffmann, et al.. (2012). Parathyroidectomy, Elevated Depression Scores, and Suicidal Ideation in Patients With Primary Hyperparathyroidism. JAMA Surgery. 148(2). 109–109. 80 indexed citations
15.
Schiffmann, Leif, Michael Linnebacher, Friedrich Prall, et al.. (2012). A novel sialyl LeX expression score as a potential prognostic tool in colorectal cancer. World Journal of Surgical Oncology. 10(1). 95–95. 9 indexed citations
16.
Kuehn, Florian, Leif Schiffmann, Bettina Rau, & E. Klar. (2012). Surgical Endoscopic Vacuum Therapy for Anastomotic Leakage and Perforation of the Upper Gastrointestinal Tract. Journal of Gastrointestinal Surgery. 16(11). 2145–2150. 45 indexed citations
17.
Schiffmann, Leif, et al.. (2008). Colorectal cancer in the elderly—surgical treatment and long-term survival. International Journal of Colorectal Disease. 23(6). 601–610. 35 indexed citations
18.
Prall, Friedrich, et al.. (2006). Tumour regression and mesorectal lymph node changes after intensified neoadjuvant chemoradiation for carcinoma of the rectum. Apmis. 114(3). 201–210. 22 indexed citations
19.
Schiffmann, Leif, et al.. (2004). Effects of Parathyroidectomy on Renal Allograft Survival. Kidney & Blood Pressure Research. 27(3). 191–196. 46 indexed citations
20.
Schiffmann, Leif, et al.. (2004). Colon perforation with acute peritonitis after taking clindamycin and diclofenac following wisdom tooth removal. Journal of Cranio-Maxillofacial Surgery. 32(5). 330–334. 17 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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