Leonard Witkamp

1.1k total citations
30 papers, 751 citations indexed

About

Leonard Witkamp is a scholar working on Oncology, Epidemiology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Leonard Witkamp has authored 30 papers receiving a total of 751 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Oncology, 10 papers in Epidemiology and 10 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Leonard Witkamp's work include Cutaneous Melanoma Detection and Management (11 papers), Psoriasis: Treatment and Pathogenesis (9 papers) and Telemedicine and Telehealth Implementation (7 papers). Leonard Witkamp is often cited by papers focused on Cutaneous Melanoma Detection and Management (11 papers), Psoriasis: Treatment and Pathogenesis (9 papers) and Telemedicine and Telehealth Implementation (7 papers). Leonard Witkamp collaborates with scholars based in Netherlands, Germany and United Kingdom. Leonard Witkamp's co-authors include Phyllis I. Spuls, Job P. van der Heijden, J.D. Bos, Patrick M. Bossuyt, Nicolette F. de Keizer, Merlijne Jaspers, Jan D. Bos, Marcus M. H. M. Meinardi, Anura Rambukkana and Frans Voorbraak and has published in prestigious journals such as Journal of Investigative Dermatology, Journal of the American Academy of Dermatology and Journal of Medical Internet Research.

In The Last Decade

Leonard Witkamp

30 papers receiving 720 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Leonard Witkamp Netherlands	13	297	295	213	199	176	30	751
María Adoración Nieto García Spain	11	168 0.6×	395 1.3×	77 0.4×	231 1.2×	91 0.5×	27	822
Caroline A. Nelson United States	16	345 1.2×	232 0.8×	47 0.2×	438 2.2×	133 0.8×	51	985
R. Taberner Spain	14	189 0.6×	169 0.6×	153 0.7×	176 0.9×	110 0.6×	60	574
James C. Shaw Canada	19	448 1.5×	112 0.4×	26 0.1×	282 1.4×	85 0.5×	55	1.0k
Erin Amerson United States	12	392 1.3×	179 0.6×	71 0.3×	185 0.9×	64 0.4×	42	841
Mahkam Tavallaee United States	13	523 1.8×	187 0.6×	215 1.0×	331 1.7×	120 0.7×	17	960
Devon E. McMahon United States	12	808 2.7×	106 0.4×	83 0.4×	209 1.1×	147 0.8×	32	1.4k
Jennifer L. Hsiao United States	20	1.0k 3.4×	81 0.3×	54 0.3×	365 1.8×	146 0.8×	173	1.4k
David Chandler United Kingdom	9	281 0.9×	25 0.1×	572 2.7×	81 0.4×	63 0.4×	15	874
D Barzilai United States	13	102 0.3×	285 1.0×	44 0.2×	139 0.7×	67 0.4×	34	574

Countries citing papers authored by Leonard Witkamp

Since Specialization

Citations

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

Fields of papers citing papers by Leonard Witkamp

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Leonard Witkamp

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

Bonten, Tobias, Jeremy C Wyatt, Marise J. Kasteleyn, et al.. (2020). Online Guide for Electronic Health Evaluation Approaches: Systematic Scoping Review and Concept Mapping Study. Journal of Medical Internet Research. 22(8). e17774–e17774. 55 indexed citations

Heijden, Job P. van der, et al.. (2019). Is Teledermoscopy Improving General Practitioner Skin Cancer Care?. Studies in health technology and informatics. 264. 1795–1796. 6 indexed citations

Witkamp, Leonard, et al.. (2019). The Value of Teledermoscopy to the Expertise of General Practitioners Diagnosing Skin Disorders Based on ICD-10 Coding. Studies in health technology and informatics. 264. 834–838. 3 indexed citations

Kirtschig, Gudula, Peter Martus, Christian Thies, et al.. (2018). Improving cooperation between general practitioners and dermatologists via telemedicine: study protocol of the cluster-randomized controlled TeleDerm study. Trials. 19(1). 583–583. 12 indexed citations

Ros, Wynand J.G., et al.. (2018). Professionals' Use of a Multidisciplinary Communication Tool for Patients With Dementia in Primary Care. CIN Computers Informatics Nursing. 36(4). 193–198. 6 indexed citations

Grinsven, Mark J. J. P. van, Thomas Theelen, Leonard Witkamp, et al.. (2016). Automatic differentiation of color fundus images containing drusen or exudates using a contextual spatial pyramid approach. Biomedical Optics Express. 7(3). 709–709. 8 indexed citations

Heijden, Job P. van der, et al.. (2016). Two Decades of Teledermatology: Current Status and Integration in National Healthcare Systems. Current Dermatology Reports. 5(2). 96–104. 120 indexed citations

Heijden, Job P. van der, et al.. (2013). Telepulmonology: Effect on quality and efficiency of care. Respiratory Medicine. 108(2). 314–318. 13 indexed citations

Heijden, Job P. van der, et al.. (2013). Telepulmonology in the Netherlands: Effect on Quality and Efficiency of Care. Studies in health technology and informatics. 192. 1087–1087. 2 indexed citations

10.

Heijden, Job P. van der, et al.. (2013). Telepulmonology: effect on quality and efficiency of care. International Journal of Integrated Care. 13(7). 4 indexed citations

11.

Heijden, Job P. van der, et al.. (2013). Accuracy and reliability of teledermatoscopy with images taken by general practitioners during everyday practice. Journal of Telemedicine and Telecare. 19(6). 320–325. 35 indexed citations

12.

Heijden, Job P. van der, N. F. de Keizer, Frans Voorbraak, et al.. (2010). A pilot study on tertiary teledermatology: feasibility and acceptance of telecommunication among dermatologists. Journal of Telemedicine and Telecare. 16(8). 447–453. 13 indexed citations

13.

Heijden, Job P. van der, Phyllis I. Spuls, Frans Voorbraak, et al.. (2010). Tertiary Teledermatology: A Systematic Review. Telemedicine Journal and e-Health. 16(1). 56–62. 39 indexed citations

14.

Witkamp, Leonard, I.M. Zonneveld, R. E. Schopf, et al.. (2006). Efficacy and tolerability of multiple-dose SDZ IMM 125 in patients with severe psoriasis. British Journal of Dermatology. 133(1). 95–103. 5 indexed citations

15.

Spuls, Phyllis I., Leonard Witkamp, Patrick M. Bossuyt, & Jan D. Bos. (2004). The Course of Chronic Plaque-Type Psoriasis in Placebo Groups of Randomized Controlled Studies. Archives of Dermatology. 140(3). 338–44; discussion 344. 10 indexed citations

16.

Spuls, Phyllis I., Peter Bossuyt, J.J.E. van Everdingen, Leonard Witkamp, & Jan D. Bos. (1998). The Development of Practice Guidelines for the Treatment of Severe Plaque Form Psoriasis. Archives of Dermatology. 134(12). 1591–6. 28 indexed citations

17.

Zonneveld, I.M., Leonard Witkamp, Patrick M. Bossuyt, Marcus M. H. M. Meinardi, & J.D. Bos. (1997). The effectiveness of cyclosporine and photochemotherapy in the treatment of psoriasis: a retrospective study. Journal of the European Academy of Dermatology and Venereology. 9(3). 232–236. 2 indexed citations

18.

Rie, Menno A. de, et al.. (1996). Soluble interleukin-2 receptor (sIL-2R) is a marker of disease activity in psoriasis: a comparison of sIL-2R, sCD27, sCD4, sCD8 and sICAM-1.. Acta Dermato Venereologica. 76(5). 357–360. 29 indexed citations

19.

Witkamp, Leonard, Peter J. Velthuis, M.E.J.M. Verhaegh, et al.. (1993). An open prospective clinical trial with systemic ranitidine in the treatment of psoriasis. Journal of the American Academy of Dermatology. 28(5). 778–781. 12 indexed citations

20.

Rambukkana, Anura, Pranab K. Das, Leonard Witkamp, et al.. (1993). Antibodies to Mycobacterial 65-kDa Heat Shock Protein and Other Immunodominant Antigens in Patients with Psoriasis. Journal of Investigative Dermatology. 100(1). 87–92. 53 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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