Angel Sierra

975 total citations
8 papers, 533 citations indexed

About

Angel Sierra is a scholar working on Epidemiology, Hepatology and Surgery. According to data from OpenAlex, Angel Sierra has authored 8 papers receiving a total of 533 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Epidemiology, 4 papers in Hepatology and 3 papers in Surgery. Recurrent topics in Angel Sierra's work include Liver Disease and Transplantation (4 papers), Liver Disease Diagnosis and Treatment (4 papers) and Organ Transplantation Techniques and Outcomes (2 papers). Angel Sierra is often cited by papers focused on Liver Disease and Transplantation (4 papers), Liver Disease Diagnosis and Treatment (4 papers) and Organ Transplantation Techniques and Outcomes (2 papers). Angel Sierra collaborates with scholars based in Colombia, Spain and Türkiye. Angel Sierra's co-authors include Alberto Monescillo, Clemencia Guevara, Ana Castellot, José Miguel Marrero, Ana Cruz, Luís Ruíz-del-Árbol, Michelle Peate, Luis García‐Villarreal, Elena Jiménez and José Marı́a Alonso and has published in prestigious journals such as SHILAP Revista de lepidopterología, Hepatology and CHEST Journal.

In The Last Decade

Angel Sierra

8 papers receiving 517 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Angel Sierra Colombia	5	475	445	351	45	25	8	533
Montserrat Planella Spain	6	197 0.4×	179 0.4×	136 0.4×	50 1.1×	29 1.2×	14	296
Ana Cruz Portugal	4	364 0.8×	338 0.8×	249 0.7×	38 0.8×	33 1.3×	6	412
Ravin Bastiampillai Canada	6	439 0.9×	383 0.9×	227 0.6×	75 1.7×	19 0.8×	8	464
Stefania Casu Switzerland	7	368 0.8×	335 0.8×	197 0.6×	52 1.2×	16 0.6×	10	395
Altaf Alam Pakistan	11	170 0.4×	158 0.4×	202 0.6×	131 2.9×	15 0.6×	25	311
Piotr Smoter Poland	10	173 0.4×	63 0.1×	179 0.5×	3 0.1×	29 1.2×	21	253
Pablo Gamboa United States	6	120 0.3×	119 0.3×	171 0.5×	5 0.1×	45 1.8×	8	290
Sven Ploem Netherlands	4	343 0.7×	76 0.2×	368 1.0×	7 0.2×	25 1.0×	4	398
Alshimaa Alaboudy Egypt	4	124 0.3×	95 0.2×	63 0.2×	17 0.4×	39 1.6×	6	246
Ann T. Olzinski United States	6	577 1.2×	168 0.4×	587 1.7×	2 0.0×	38 1.5×	7	670

Countries citing papers authored by Angel Sierra

Since Specialization

Citations

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

Fields of papers citing papers by Angel Sierra

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Angel Sierra

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

All Works

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8 of 8 papers shown

1.

Monescillo, Alberto, Luís Ruíz-del-Árbol, Angel Sierra, et al.. (2004). Influence of portal hypertension and its early decompression by TIPS placement on the outcome of variceal bleeding. Hepatology. 40(4). 793–801. 323 indexed citations

2.

Sierra, Angel, et al.. (2004). A concise and structured review of drug-induced toxic hepatic disease. Annals of Hepatology. 3(1). 18–25. 4 indexed citations

3.

Monescillo, Alberto, Luís Ruíz-del-Árbol, Angel Sierra, et al.. (2004). Influence of portal hypertension and its early decompression by TIPS placement on the outcome of variceal bleeding. Hepatology. 40(4). 793–801. 47 indexed citations

4.

Sierra, Angel, et al.. (2002). "Computador, Cibernética e Información" del Académico José Felix Patiño Restrepo. SHILAP Revista de lepidopterología. 11 indexed citations

5.

García‐Villarreal, Luis, Francisco Martínez‐Martínez, Clemencia Guevara, et al.. (2002). Cost-effectiveness (CE) of a trial for prevention of variceal rebleeding (VB): tips vs sclerotherapy (ES). Sensitivity analysis (SA) with actual data. Journal of Hepatology. 36. 202–202. 3 indexed citations

6.

Hnatiuk, Oleh W., et al.. (2001). Spirometry in Surgery for Anterior Mediastinal Masses. CHEST Journal. 120(4). 1152–1156. 31 indexed citations

7.

García‐Villarreal, Luis, Angel Sierra, Clemencia Guevara, et al.. (1999). Transjugular Intrahepatic Portosystemic Shunt Versus Endoscopic Sclerotherapy for the Prevention of Variceal Rebleeding After Recent Variceal Hemorrhage. Hepatology. 29(1). 27–32. 110 indexed citations

8.

García‐Villarreal, Luis, Angel Sierra, Clemencia Guevara, et al.. (1999). Transjugular intrahepatic portosystemic shunt versus endoscopic sclerotherapy for the prevention of variceal rebleeding after recent variceal hemorrhage. European Journal of Gastroenterology & Hepatology. 11(6). 688–688. 4 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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