This map shows the geographic impact of D Hallberg'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 D Hallberg with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites D Hallberg more than expected).
This network shows the impact of papers produced by D Hallberg. 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 D Hallberg. The network helps show where D Hallberg may publish in the future.
Co-authorship network of co-authors of D Hallberg
This figure shows the co-authorship network connecting the top 25 collaborators of D Hallberg.
A scholar is included among the top collaborators of D Hallberg 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 D Hallberg. D Hallberg is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Hallberg, D, et al.. (1982). An oral amino acid loading test before and after intestinal bypass operation for morbid obesity.. PubMed. 148(1). 73–86.5 indexed citations
4.
Bäckman, Lars, B. Nordenvall, & D Hallberg. (1980). Difference in kidney stone incidence after three types of intestinal bypass operations.. PubMed. 53. 149–57.3 indexed citations
Hagenfeldt, Lars, et al.. (1978). [Treatment of hepatic coma with balanced amino acid solution].. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 75(50). 4707–10.1 indexed citations
7.
Hallberg, D, et al.. (1978). A reflux-preventing valve in jejunoileal bypass.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 482. 77–77.2 indexed citations
8.
Hallberg, D. (1978). A survey of possible surgical methods of treating obesity.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 482. 31–2.4 indexed citations
9.
Fenyö, G, Lars Bäckman, & D Hallberg. (1976). Morphological changes of the small intestine following jejuno-ileal shunt in obese subjects.. PubMed. 142(2). 154–9.27 indexed citations
10.
Fenyö, G & D Hallberg. (1976). Intestinal hypertrophy after small intestinal bypass in the rat. Studies on methods and reversibility of changes.. PubMed. 142(3). 261–9.6 indexed citations
La, Carlson, D Hallberg, & A. Killander. (1971). Plasma lipids, vitamin B 12 and folic acid in patients operated with partial small intestinal resection because of non-malignant and non-infectious disease. A retrospective study.. PubMed. 137(8). 757–62.1 indexed citations
Hallberg, D. (1964). MORTALITY FROM CHOLELITHIASIS. REVIEW OF A CASE SERIES AND SURVEY OF THE LITERATURE.. PubMed. 127. 502–14.2 indexed citations
19.
Hallberg, D, et al.. (1960). Subcutaneous rupture of the extensor tendon of the distal phalanx of the finger: "mallet finger". Brief review of the literature and report on 127 cases treated conservatively.. PubMed. 119. 260–7.12 indexed citations
20.
Hallberg, D, et al.. (1960). Serum alkaline phosphatases, transaminases, and ornithine carbamyl transferase in biliary obstruction. Preliminary report on experiments in the dog.. PubMed. 120. 251–7.5 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.