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Article
Risk factors for complications and incomplete resection after endoscopic resection for duodenal submucosal tumors
Endoscopic resection (ER) has been used to remove submucosal tumors (SMTs) in recent years; however, duodenal ER is associated with high rates of immediate or delayed bleeding and perforation. Whether ER can b...
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Article
Open AccessA single-cell transcriptional landscape of immune cells shows disease-specific changes of T cell and macrophage populations in human achalasia
Achalasia is a rare motility disorder of the esophagus caused by the gradual degeneration of myenteric neurons. Immune-mediated ganglionitis has been proposed to underlie the loss of myenteric neurons. Here, w...
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Article
Clinical outcomes of endoscopic resection for the treatment of esophageal gastrointestinal stromal tumors: a ten-year experience from a large tertiary center in China
Esophageal gastrointestinal stromal tumors (E-GISTs) are extremely rare and surgical resection is the recommended approach. However, surgical resection usually causes severe trauma that may result in significa...
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Article
Endoscopic resection and suturing methods for non-ampullary duodenal submucosal tumors: “mini-invasive” treatments that should never be underestimated
To evaluate the effectiveness and safety of endoscopic resection and various suturing methods to treat non-ampullary duodenal submucosal tumors (NAD-SMTs).
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Article
A prediction model and nomogram for technical difficulty of peroral endoscopic myotomy
Peroral endoscopic myotomy (POEM) is a promising endoscopic technique for achalasia. We aimed to establish a regression model and develop a simple nomogram to predict the technical difficulty of POEM in a sing...
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Article
Endoscopic mucosal resection of gastrointestinal polyps with a novel low-temperature plasma radio frequency generator: a non-inferiority multi-center randomized control study
To evaluate the efficacy and safety of novel plasma radio frequency generator and its single-use polypectomy snares for endoscopic mucosal resection (EMR) of gastrointestinal (GI) polyps.
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Article
Endoscopic submucosal dissection for lesions involving the anastomosis after upper gastrointestinal surgery
Endoscopic submucosal dissection (ESD) for anastomotic lesions is technically challenging due to severe fibrosis, deformity, staples, and limited space for procedure. We aimed to characterize the clinicopathol...
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Article
A complete algebraic solution to the optimal dynamic rationing policy in the stock-rationing queue with two demand classes
In this paper, we study a stock-rationing queue with two demand classes by means of the sensitivity-based optimization, and develop a complete algebraic solution to the optimal dynamic rationing policy. We sho...
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Article
Open AccessImproving bowel preparation for colonoscopy with a smartphone application driven by artificial intelligence
Optimal bowel preparation is a prerequisite for a successful colonoscopy; however, the rate of inadequate bowel preparation remains relatively high. In this study, we establish a smartphone app that assesses p...
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Article
Matched Queues with Flexible and Impatient Customers
In this paper, we consider a double-ended queue with First-Come-First-Match discipline (also known as matched queues) under customers’ flexible and impatient behaviors. Such a system can be expressed as a leve...
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Article
Dockless bike-sharing systems with unusable bikes: removing, repair and redistribution under batch policies
This paper discusses a large-scale dockless bike-sharing system (DBSS) with unusable bikes, which can be removed, repaired, redistributed and reused under two batch policies: one for removing the unusable bike...
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Article
Optimal dynamic mining policy of blockchain selfish mining through sensitivity-based optimization
The security and fairness of blockchain are always threatened by selfish mining attacks. To study such selfish mining attacks, some necessary and useful methods need to be developed sufficiently. In this paper...
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Article
Landscape of esophageal submucosal tunneling endoscopic resection-related adverse events in a standardized lexicon: a large volume of 1701 cases
Submucosal tunneling endoscopic resection (STER) has been widely applied for esophageal submucosal tumors. This large volume study aims to provide a standard landscape of STER-related AEs for reference.
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Article
Stochastic performance modeling for practical byzantine fault tolerance consensus in the blockchain
The practical Byzantine fault tolerant (PBFT) consensus mechanism is one of the most basic consensus algorithms (or protocols) in blockchain technologies. Thus its performance evaluation is an interesting and ...
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Article
Long-term prognosis of small gastric gastrointestinal stromal tumors with high histological grade: a longitudinal nested cohort study
Gastrointestinal stromal tumors (GIST) are mostly seen in the stomach. Clinical data on GISTs ≤ 2 cm with > 5 mitosis/50 HPFs are limited. This study aimed to analyze small GISTs with high histological grades ...
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Article
A mean-field matrix-analytic method for bike sharing systems under Markovian environment
This paper proposes a novel mean-field matrix-analytic method in the study of bike sharing systems, in which a Markovian environment is constructed to express time-inhomogeneity and asymmetry of processes that...
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Article
Controlled hypertension under hemostasis prevents post-gastric endoscopic submucosal dissection bleeding: a prospective randomized controlled trial
Endoscopic submucosal dissection (ESD) is a prominent minimally invasive operative technique for treating early gastrointestinal tumors but can result in postoperative bleeding. We conducted a randomized contr...
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Article
Correction to: Nexus between agro-ecological efficiency and carbon emission transfer: evidence from China
A Correction to this paper has been published: https://doi.org/10.1007/s11356-021-14461-w
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Article
Short- and long-term outcomes of endoscopic submucosal dissection for superficial esophageal squamous cell cancer in patients with prior gastrectomy
The surgery for esophageal cancer arising after prior gastrectomy is technically difficult with high morbidity and mortality. Endoscopic submucosal dissection (ESD) is a minimally invasive endoscopic treatment...
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Article
Nexus between agro-ecological efficiency and carbon emission transfer: evidence from China
The economy of China is growing rapidly. With this overwhelming growth, the country is experiencing a higher level of carbon emissions. Amid this backdrop, China is under immense pressure to reduce carbon emis...