Hans‐Olaf Johannessen

About

Hans‐Olaf Johannessen is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Hans‐Olaf Johannessen has authored 31 papers receiving a total of 616 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 16 papers in Pulmonary and Respiratory Medicine and 6 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Hans‐Olaf Johannessen’s work include Esophageal and GI Pathology (13 papers), Esophageal Cancer Research and Treatment (8 papers) and Gastric Cancer Management and Outcomes (7 papers). Hans‐Olaf Johannessen is often cited by papers focused on Esophageal and GI Pathology (13 papers), Esophageal Cancer Research and Treatment (8 papers) and Gastric Cancer Management and Outcomes (7 papers). Hans‐Olaf Johannessen collaborates with scholars based in Norway, United Kingdom and Germany. Hans‐Olaf Johannessen's co-authors include Egil Johnson, Erik Carlsen, Bjørn Hofstad, Anders Drolsum and Tone Enden and has published in prestigious journals such as Annals of Surgery, International Journal of Radiation Oncology*Biology*Physics and Critical Reviews in Oncology/Hematology.

In The Last Decade

Fields of papers citing papers by Hans‐Olaf Johannessen

Since Specialization

EngineeringComputer SciencePhysics and AstronomyMathematicsEarth and Planetary SciencesEnergyEnvironmental ScienceMaterials ScienceChemical EngineeringChemistryAgricultural and Biological SciencesVeterinaryDecision SciencesArts and HumanitiesBusiness, Management and AccountingSocial SciencesPsychologyEconomics, Econometrics and FinanceHealth ProfessionsDentistryMedicineBiochemistry, Genetics and Molecular BiologyNeuroscienceNursingImmunology and MicrobiologyPharmacology, Toxicology and Pharmaceutics

This network shows the specialization of papers citing the papers produced by Hans‐Olaf Johannessen. Nodes represent fields, and links connect fields that are likely to share authors. The network helps show where Hans‐Olaf Johannessen may publish in the future.

Countries citing papers authored by Hans‐Olaf Johannessen

Since Specialization

Citations

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

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