Karen Ma

1.2k total citations
37 papers, 706 citations indexed

About

Karen Ma is a scholar working on Neurology, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Karen Ma has authored 37 papers receiving a total of 706 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Neurology, 12 papers in Pulmonary and Respiratory Medicine and 12 papers in Oncology. Recurrent topics in Karen Ma's work include Neurological disorders and treatments (9 papers), Colorectal Cancer Screening and Detection (9 papers) and Parkinson's Disease Mechanisms and Treatments (7 papers). Karen Ma is often cited by papers focused on Neurological disorders and treatments (9 papers), Colorectal Cancer Screening and Detection (9 papers) and Parkinson's Disease Mechanisms and Treatments (7 papers). Karen Ma collaborates with scholars based in United States, China and Hong Kong. Karen Ma's co-authors include Elan D. Louis, Etty Cortés, Phyllis L. Faust, Rachel Babij, Jean-Paul G. Vonsattel, Michelle Lee, Joshua Melson, Bonaventure Ip, Jill Abrigo and Michelle Yu and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Brain.

In The Last Decade

Karen Ma

36 papers receiving 696 citations

Peers

Countries citing papers authored by Karen Ma

Since Specialization

Citations

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

Fields of papers citing papers by Karen Ma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Karen Ma

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

#	Work	Indexed citations
1	Safety Outcomes Following Intravenous Thrombolysis in Acute Ischemic Stroke: A Systematic Review and Network Meta-analysis 2025 ·CNS Drugs ·(unknown), Karen Ma, (unknown), (unknown), Wei Sun, (unknown), Honghao Lai, Xue Wang, (unknown), Haiqing Song	0
2	Impact of Cold Snare vs Cold Forceps Resection of Diminutive Adenomas on Segmental Incomplete Resection Rate 2023 ·The American Journal of Gastroenterology ·(unknown), (unknown), Karen Ma, Krishna C. Vemulapalli, Douglas K. Rex, Joshua Melson	2
3	Ciprofloxacin resistance and tolerance of Pseudomonas aeruginosa ocular isolates 2023 ·Contact Lens and Anterior Eye ·(unknown), Karen Ma, (unknown), Mark Willcox	14
4	Pre-operative cognitive burden as predictor of motor outcome following bilateral subthalamic nucleus deep brain stimulation in Parkinson’s disease 2022 ·Neurological Sciences ·Venus Tang, Xian Lun Zhu, Claire K.Y. Lau, Anne Chan, Karen Ma, Jonas Yeung, (unknown), Jill Abrigo, David Chan, Danny Cheuk Wing Chan, Vincent Mok, Wai Sang Poon	5
5	Risk of total metachronous advanced neoplasia in patients with both small tubular adenomas and serrated polyps 2022 ·Gastrointestinal Endoscopy ·(unknown), Krishna C. Vemulapalli, (unknown), (unknown), Karen Ma, Shriram Jakate, Douglas K. Rex, Joshua Melson	4
6	Segmental metachronous adenoma rate as a metric for monitoring incomplete resection in a colonoscopy screening program 2021 ·Gastrointestinal Endoscopy ·(unknown), (unknown), Karen Ma, Joshua Melson	2
7	Regional High Wall Shear Stress Associated With Stenosis Regression in Symptomatic Intracranial Atherosclerotic Disease 2020 ·Stroke ·Linfang Lan, Haipeng Liu, Vincent Ip, Yannie Soo, Jill Abrigo, Florence Fan, Sze Ho, Karen Ma, Bonaventure Ip, (unknown), Yuhua Fan, Jinsheng Zeng, Vincent Mok, Ka Sing Wong, David S. Liebeskind, Thomas Leung, Xinyi Leng	36
8	Metachronous Advanced Neoplasia on Surveillance Colonoscopy in Patients With Young- vs Older-onset of Colorectal Cancer 2019 ·Clinical Gastroenterology and Hepatology ·(unknown), Charles Muller, (unknown), Karen Ma, (unknown), Daniel A. Sussman, Eugene F. Yen, Sonia S. Kupfer, Joshua Melson	5
9	Utilization of Census Tract-Based Neighborhood Poverty Rates to Predict Non-adherence to Screening Colonoscopy 2019 ·Digestive Diseases and Sciences ·Philip Vutien, (unknown), Karen Ma, (unknown), Joshua Melson	12
10	Risk of intracerebral haemorrhage in Chinese patients with atrial fibrillation on warfarin with cerebral microbleeds: the IPAAC-Warfarin study 2018 ·Journal of Neurology Neurosurgery & Psychiatry ·Yannie Soo, Jill Abrigo, Kam Tat Leung, (unknown), Hing Lung Ip, Sze Ho, Karen Ma, Wing Chi Fong, Siu Hung Li, Richard Li, Ping Wing Ng, (unknown), Wenyan Liu, Bonnie Lam, Ka Sing Wong, Vincent Mok, Chiu‐Wing Winnie Chu, Thomas Leung	12
11	Patients with small and diminutive proximal hyperplastic polyps have higher rates of synchronous advanced neoplasia compared with patients without serrated lesions 2018 ·Gastrointestinal Endoscopy ·(unknown), Karen Ma, (unknown), (unknown), Daniel Berger, Brett Mahon, Shriram Jakate, Joshua Melson	14
12	Presence of small sessile serrated polyps increases rate of advanced neoplasia upon surveillance compared with isolated low-risk tubular adenomas 2016 ·Gastrointestinal Endoscopy ·Joshua Melson, Karen Ma, Saba Arshad, Michael Greenspan, (unknown), (unknown), Faraz Bishehsari, Brett Mahon, Shriram Jakate	33
13	Prevention and management of hepatitis B virus reactivation in patients with hematological malignancies treated with anticancer therapy 2016 ·World Journal of Gastroenterology ·Man Fai Law, (unknown), (unknown), (unknown), Karen Ma, Chak-Yu So, Bonaventure Ip, Jacqueline So, (unknown), (unknown), (unknown)	60
14	Reduced Purkinje cell dendritic arborization and loss of dendritic spines in essential tremor 2014 ·Brain ·Elan D. Louis, Michelle Lee, Rachel Babij, Karen Ma, Etty Cortés, Jean-Paul G. Vonsattel, Phyllis L. Faust	102
15	Lingo-1 expression is increased in essential tremor cerebellum and is present in the basket cell pinceau 2013 ·Acta Neuropathologica ·Sheng‐Han Kuo, Guomei Tang, Elan D. Louis, Karen Ma, (unknown), (unknown), Etty Cortés, (unknown), Ai Yamamoto, David Sulzer, Phyllis L. Faust	66
16	Macroautophagy Abnormality in Essential Tremor 2012 ·PLoS ONE ·Sheng‐Han Kuo, Guomei Tang, Karen Ma, Rachel Babij, Etty Cortés, (unknown), Phyllis L. Faust, David Sulzer, Elan D. Louis	14
17	Increased number of Purkinje cell dendritic swellings in essential tremor 2011 ·European Journal of Neurology ·Michelle Yu, Karen Ma, Phyllis L. Faust, Lawrence S. Honig, Enric Cortés, Jean‐Paul Vonsattel, Elan D. Louis	65
18	Structural and vascular permeability abnormalities associated with lacunes of the human brain 2009 ·Acta Neurologica Scandinavica ·Karen Ma, Yngve Olsson	10
19	Perinatal medicine 2003 ·Archives of Disease in Childhood ·P.C. Ng, (unknown), C W Lam, Karen Ma, T. F. Fok, Iris T. Chan, Eliza Lai‐Yi Wong, Sarah Pearce, Michael Symonds, Terence Stephenson	1
20	The modern Madame Butterfly : fantasy and reality in Japanese cross-cultural relationships 1996 ·Karen Ma	10

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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