Katja Harjula

504 total citations
7 papers, 115 citations indexed

About

Katja Harjula is a scholar working on Epidemiology, Surgery and Small Animals. According to data from OpenAlex, Katja Harjula has authored 7 papers receiving a total of 115 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Epidemiology, 5 papers in Surgery and 1 paper in Small Animals. Recurrent topics in Katja Harjula's work include Cervical Cancer and HPV Research (7 papers), Genital Health and Disease (5 papers) and Hepatitis B Virus Studies (4 papers). Katja Harjula is often cited by papers focused on Cervical Cancer and HPV Research (7 papers), Genital Health and Disease (5 papers) and Hepatitis B Virus Studies (4 papers). Katja Harjula collaborates with scholars based in Finland, Sweden and Belgium. Katja Harjula's co-authors include Matti Lehtinen, Tiina Eriksson, Dan Apter, Kari Natunen, Frank Struyf, Tapio Luostarinen, Jorma Paavonen, Pekka Nieminen, Joakim Dillner and Camilla Lagheden and has published in prestigious journals such as International Journal of Cancer, BMJ Open and Frontiers in Cellular and Infection Microbiology.

In The Last Decade

Katja Harjula

7 papers receiving 114 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Katja Harjula Finland	4	102	46	14	13	11	7	115
Jaime Alberto Restrepo United States	4	180 1.8×	59 1.3×	31 2.2×	39 3.0×	7 0.6×	4	195
Hella Pasmans Netherlands	7	91 0.9×	46 1.0×	6 0.4×	21 1.6×	3 0.3×	8	97
Julien Puech France	6	57 0.6×	29 0.6×	9 0.6×	11 0.8×	10 0.9×	14	98
Asha Jain United States	5	61 0.6×	28 0.6×	7 0.5×	10 0.8×	1 0.1×	6	95
Andrew Pavelyev United States	8	94 0.9×	35 0.8×	43 3.1×	6 0.5×	2 0.2×	24	108
Jorge Leon-Cruz United States	2	93 0.9×	63 1.4×	4 0.3×	4 0.3×	9 0.8×	2	105
Xifang Nie China	4	95 0.9×	48 1.0×	2 0.1×	5 0.4×	5 0.5×	4	125
Racheal S. Dube Mandishora Zimbabwe	8	159 1.6×	73 1.6×	2 0.1×	4 0.3×	6 0.5×	19	176
W.A.J. Poppe Belgium	4	64 0.6×	23 0.5×	2 0.1×	14 1.1×	4 0.4×	4	73
Akinfolarin Adepiti Nigeria	4	155 1.5×	69 1.5×	4 0.3×	7 0.5×	1 0.1×	5	164

Countries citing papers authored by Katja Harjula

Since Specialization

Citations

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

Fields of papers citing papers by Katja Harjula

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Katja Harjula

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

All Works

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7 of 7 papers shown

Lehtinen, Matti, Tapio Luostarinen, Tiina Eriksson, et al.. (2024). Head-to-head comparison of two human papillomavirus vaccines for efficacy against cervical intraepithelial neoplasia grade 3 and adenocarcinoma in situ—population-based follow-up of two cluster-randomized trials. Frontiers in Cellular and Infection Microbiology. 14. 1437704–1437704. 1 indexed citations

Eriksson, Tiina, Katja Harjula, Mari Hokkanen, et al.. (2022). Association of Chlamydia trachomatis infection with cervical atypia in adolescent women with short-term or long-term use of oral contraceptives: a longitudinal study in HPV vaccinated women. BMJ Open. 12(6). e056824–e056824. 3 indexed citations

Lehtinen, Matti, Dan Apter, Tiina Eriksson, et al.. (2021). Effectiveness of various human papillomavirus vaccination strategies: A community randomized trial in Finland. Cancer Medicine. 10(21). 7759–7771. 3 indexed citations

Louvanto, Karolina, Tiina Eriksson, Dan Apter, et al.. (2019). Baseline findings and safety of infrequent vs. frequent screening of human papillomavirus vaccinated women. International Journal of Cancer. 147(2). 440–447. 8 indexed citations

Lehtinen, Matti, Dan Apter, Tiina Eriksson, et al.. (2019). Effectiveness of the AS04‐adjuvanted HPV‐16/18 vaccine in reducing oropharyngeal HPV infections in young females—Results from a community‐randomized trial. International Journal of Cancer. 147(1). 170–174. 18 indexed citations

Lehtinen, Matti, Camilla Lagheden, Tapio Luostarinen, et al.. (2017). Ten-year follow-up of human papillomavirus vaccine efficacy against the most stringent cervical neoplasia end-point—registry-based follow-up of three cohorts from randomized trials. BMJ Open. 7(8). e015867–e015867. 72 indexed citations

Eriksson, Tiina, Saku Torvinen, Sarah C Woodhall, et al.. (2013). Impact of HPV16/18 vaccination on quality of life: A pilot study. The European Journal of Contraception & Reproductive Health Care. 18(5). 364–371. 10 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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