Match!
James M. Clark
George Washington University
AnatomyPaleontologyTheropodaShishugou FormationBiology
123Publications
38H-index
4,090Citations
What is this?
Publications 121
Newest
#1Emese M. Bordy (UCT: University of Cape Town)H-Index: 15
#2Miengah Abrahams (UCT: University of Cape Town)H-Index: 3
Last. Roland Mundil (Berkeley Geochronology Center)H-Index: 30
view all 16 authors...
Abstract The upper Stormberg Group (Elliot and Clarens formations) of the main Karoo Basin is well-known for its fossil vertebrate fauna, comprising early branching members of lineages including mammals, dinosaurs, and testudinates. Despite 150 years of scientific study, the upper Stormberg Group lacks radioisotopic age constraints and remains coarsely dated via imprecise faunal correlations. Here we synthesise previous litho- and magnetostratigraphic studies, and present a comprehensive biostra...
Source
#1James M. ClarkH-Index: 38
#2Daniel J. BoffaH-Index: 24
Last. David T. CookeH-Index: 12
view all 5 authors...
The morbidity and mortality benefits of performing high-risk operations in high-volume centers by high-volume surgeons are evident. Regionalization is a proposed strategy to leverage high-volume centers for esophagectomy to improve quality outcomes. Internationally, regionalization occurs under national mandates. Those mandates do not exist in the United States and spontaneous regionalization of esophagectomy has only modestly occurred in the U.S. Regionalization must strike a careful balance an...
Source
Source
#1James M. Clark (UC Davis: University of California, Davis)H-Index: 38
#2David T. Cooke (UC Davis: University of California, Davis)H-Index: 12
Last. Miriam A Nuno (UC Davis: University of California, Davis)H-Index: 22
view all 6 authors...
Structured Abstract Objectives In 2018, the Leapfrog Group set minimum annual lung cancer surgery hospital and surgeon volume thresholds of 40 and 15, respectively. We examined if outcomes associated with Leapfrog Group volume thresholds were comparable for patients at the extremes of age and comorbidities. Methods We assessed lung cancer patients undergoing lobectomy or pneumonectomy in the New York and Florida State Inpatient Databases (2007-2013). Multivariate logit models evaluated in-hospit...
1 CitationsSource
#1James M. Clark (UC Davis: University of California, Davis)H-Index: 38
#2Angelica S. Marrufo (UC Davis: University of California, Davis)H-Index: 1
Last. Lisa M. Brown (UC Davis: University of California, Davis)H-Index: 22
view all 9 authors...
Background Cardiopulmonary assessment for lung resection is important for risk stratification, and the American College of Chest Physicians (ACCP) guidelines provide decision support. We ascertained the cardiopulmonary assessment practices of thoracic surgeons and determined whether they are guideline concordant. Methods An anonymous survey was emailed to 846 thoracic surgeons who participate in The Society of Thoracic Surgeons General Thoracic Surgery Database. We analyzed survey responses by p...
Source
#1Zichuan Qin (CAS: Chinese Academy of Sciences)
#2James M. Clark (GW: George Washington University)H-Index: 38
Last. Xing Xu (CAS: Chinese Academy of Sciences)H-Index: 44
view all 4 authors...
Alvarezsaurian dinosaurs, a group of bizarre theropods with greatly shortened and modified forelimbs, are known mostly from the Cretaceous of Asia and South America. Here we report a new alvarezsaurian, Shishugounykus inexpectus gen. et sp. nov, based on a specimen recovered from the Middle–Upper Jurassic Shishugou Formation of the Junggar Basin, western China. Together with two other alvarezsaurians from this formation, i.e., Haplocheirus sollers and Aorun zhaoi, these Shishugou forms represent...
Source
#1James M. ClarkH-Index: 38
#2David T. CookeH-Index: 12
Last. Miriam A NunoH-Index: 22
view all 7 authors...
Source
#1Elizabeth A. David (UC Davis: University of California, Davis)H-Index: 9
#2Stina W. Andersen (UC Davis: University of California, Davis)H-Index: 1
Last. Robert J. Canter (UC Davis: University of California, Davis)H-Index: 25
view all 9 authors...
Abstract Objective Overall survival (OS) for advanced stage (IIIA-IV) non–small cell lung cancer (NSCLC) is highly variable, and retrospective data show a survival advantage for patients receiving therapeutic intent pulmonary resection. We hypothesized that this variability in OS can be modeled separately by stage to allow a personalized estimate of OS. Methods In a cohort of patients with advanced-stage NSCLC from the National Cancer Database, we assessed the accuracy of Surgical Selection Scor...
2 CitationsSource
#1James M. Clark (UC Davis: University of California, Davis)H-Index: 38
#2Garth H. UtterH-Index: 23
Last. David T. CookeH-Index: 12
view all 6 authors...
The recent implementation of the International Classification of Diseases, 10th Revision, Clinical Modification and Procedure Coding System (ICD-10-CM/PCS) provides a robust classification of diagnoses and procedures for hospital systems. As researchers begin using ICD-10-CM/PCS for outcomes research from administrative datasets, it is important to understand ICD-10-CM/PCS, as well as the strengths and challenges of these new classifications. In this review, we describe the development of ICD-10...
Source
#1Fenglu Han (China University of Geosciences)H-Index: 12
#2Catherine A. Forster (GW: George Washington University)H-Index: 30
Last. James M. Clark (GW: George Washington University)H-Index: 38
view all 4 authors...
Ceratopsia includes some of the best-known ornithischian dinosaurs. Many species are erected based on cranial elements alone, and the postcranial skeletons are either missing or undescribed in many taxa. Here we provide the first detailed postcranial description of Yinlong downsi based on the holotype and eight other well-preserved skeletons. Yinlong downsi from the early Late Jurassic Shishugou Formation of the Wucaiwan area, Xinjiang, China, represents one of the most basal ceratopsians. The d...
12 CitationsSource
12345678910