Results 51 to 60 of about 45,840 (304)

The Herfindahl neutral point: A firm‐level threshold for managing market concentration with evidence from US hog packing

American Journal of Agricultural Economics, EarlyView.
Abstract This paper derives a firm‐level threshold, the Herfindahl Neutral Point, from the standard concentration index used in merger review. At this threshold, a marginal expansion leaves the index unchanged. Firms below the threshold reduce concentration when they expand; firms above it increase concentration.
Andrew J. Keller, Krishna P. Paudel
wiley   +1 more source

Phenotype Expansion of Malan Syndrome: New Cases and a Review of the Literature

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Malan syndrome is an ultra‐rare overgrowth syndrome caused by pathogenic variants or deletions in nuclear factor one X (NFIX) located at 19p13.2. Here, we report a comprehensive literature review and phenotyping of known patients with Malan syndrome and present a novel cohort of eight patients.
Alex F. Nisbet, Sylvie A. Adams, Zoe S. Katz, Christal G. Delagrammatikas, Kosuke Izumi, Winifred Sigal, Kim Ventarola, Elaine H. Zackai, Julia E. Reid, Grant T. Liu, Jennifer M. Kalish   +10 more
wiley   +1 more source

A retinoscopic survey of 333 horses and ponies in the UK [PDF]

, 2014
Introduction: Ophthalmic examination in the horse is generally limited to crude assessment of vision and screening for ocular lesions. The refractive state of equine eyes and the potential impact on vision and performance requires further ...
Ellis, AD, Bracun, A, Hall, C
core   +1 more source

Clinical, Behavioral and Neuroradiological Phenotype in an Italian Cohort of Patients With Xia Gibbs Syndrome: A Multicenter Cross‐Sectional Study and Systematic Literature Review

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Heterozygous variants in the AHDC1 gene are associated with Xia Gibbs Syndrome (XGS), a genetic disorder with a highly variable phenotype. Cognitive impairment, motor delay, language delay, neonatal hypotonia, and sleep apnea are considered “cardinal” signs of the disease.
Giulia Cinelli, Stefania Della Vecchia, Patrizia Bergonzini, Elisa Caramaschi, Elisabetta Spezia, Claudia Parenti, Simona Filomena Madeo, Laura Lucaccioni, Cavalleri Francesca, Marisa Pugliese, Federico Raviglione, Clara Colonna, Olga Calabrese, Ilaria Stanghellini, Maria Carmen Marongiu, Enrico Biagioni, Anna Rita Ferrari, Roberta Battini, Lorenzo Iughetti   +18 more
wiley   +1 more source

Evaluation of Four Genetic Variants in Han Chinese Subjects with High Myopia

Journal of Ophthalmology, 2015
High myopia is one of the leading causes of blindness worldwide. However, the exact etiology of high myopia remains unraveled despite numerous attempts of elucidation. Previous genome-wide association study (GWAS) has revealed that four single nucleotide
Zimeng Ye, Huaichao Luo, Bo Gong, Ying Lin, Ping Shuai, Pu Wang, Changning Ye, Zhenglin Yang, Wanjun Wang, Yi Shi   +9 more
doaj   +1 more source

Prevalence and associated factors of myopia among school students in Shenyang, China: a cross-sectional study

Frontiers in Public Health, 2023
BackgroundIn recent years, the prevalence of myopia has increased significantly and caused great concern. Nevertheless, an estimate of myopia in the student population in Shenyang, Liaoning Province, China is still lacking.
Dan Zhang, Dan Zhang, Baijun Sun, Ming Wu, Huiying Liu, Lin Zhou, Lianying Guo   +6 more
doaj   +1 more source

The Homozygous p.(Arg215Ter) Variant in XRCC2 Is Associated With Atypical Fanconi Anemia Without Major Hematological Abnormalities in Childhood

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Fanconi Anemia (FA) is the most frequent inherited bone marrow failure syndrome. A role for the XRCC2 gene in FA was suspected in 2012 and confirmed in 2016, but only two affected individuals have been described thus far, and no long‐term follow‐up is available.
Sabina Cenciarelli, Giulia Bruna Marchetti, Maria Iascone, Maria Grazia Patricelli, Sara Giangiobbe, Gabriella Cinzia Pozzobon, Miriam Nella Savini, Fabio Giglio, Alessandro Aiuti, Paola Carrera, Francesca Ferrua, Angela Peron   +11 more
wiley   +1 more source

A 10-year retrospective study on the prevalence and biometric characteristics of high myopia in Chinese cataract surgery candidates

Scientific Reports
To evaluate the prevalence of high myopia in Chinese cataract surgery candidates and analyse their biometric characteristics, we conducted a 10-year retrospective consecutive case series of 17,325 cataract patients (22,479 eyes) classified by axial ...
Yehui Tan, Yi Shao, Liangping Liu, Zhonggang Pei, Mengying Peng, Yuanyuan Wu, Yifang Xu, Xuan Zhou, Xiaoyu Wang   +8 more
doaj   +1 more source

Insight into high myopia and the macula

Indian Journal of Ophthalmology, 2017
The incidence of myopia is constantly on the rise. Patients of high myopia and pathological myopia are young and can lose vision due to a number of degenerative changes occurring at the macula. With the emergence of new technologies such as swept-source optical coherence tomography (OCT) and OCT angiography, our understanding of macular pathology in ...
Atul Kumar, Rohan Chawla, Devesh Kumawat, Ganesh Pillay   +3 more
openaire   +3 more sources

IMI - Myopia Genetics Report [PDF]

, 2019
The knowledge on the genetic background of refractive error and myopia has expanded dramatically in the past few years. This white paper aims to provide a concise summary of current genetic findings and defines the direction where development is needed ...
CREAM Consortium, Wedenoja, Juho, Tedja, Milly S., Haarman, Annechien E. G., Kaprio, Jaakko, Meester-Smoor, Magda A.   +5 more
core   +1 more source