Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Prevalence of traumatic psychological stress reactions in children and parents following paediatric surgery: a systematic review and meta-analysis
How can instructions and feedback with external focus be shaped to enhance motor learning in children? A systematic review
An update on statistical modeling for quality risk assessment of clinical trials
What is the effect of lockdown upon hospitalisation due to COVID-19 amongst patients from a heart failure registry?
Predictors of Depression and Anxiety Symptoms in Brazil during COVID-19
Association of regional Covid-19 mortality with indicators of indoor ventilation, including temperature and wind: insights into the upcoming winter: Update Dec. 5, 2021
SPTLC1 p.Leu38Arg, a novel mutation associated with childhood ALS
SARS-CoV-2 UK, South African and Brazilian Variants in Karachi- Pakistan
Gender- and Age-Specific Associations of Visit-To-Visit Blood Pressure Variability with Incident Generalized Anxiety Disorder
Prevalence and determinants of persistent symptoms after infection with SARS-CoV-2: Protocol for an observational cohort study (LongCOVID-study)
Epidemiological and microbiological investigation of the large increase of vibriosis in northern Europe in 2018
Structural disconnectome mapping of cognitive function in post-stroke patients
The evaluation of a novel digital immunochromatographic assay with silver amplification to detect SARS-CoV-2
Mortality during the COVID-19 pandemic: findings from the CLINIMEX exercise cohort in the year of 2020
Determinants of antibody responses to two doses of ChAdOx1 nCoV-19 or BNT162b2 and a subsequent booster dose of BNT162b2 or mRNA-1273: population-based cohort study (COVIDENCE UK)
Systematic review of the association between ABO blood type and COVID-19 incidence and mortality
Quantitative plasma proteomics of survivor and non-survivor COVID-19 patients admitted to hospital unravels potential prognostic biomarkers and therapeutic targets
Simulating the impacts of interregional mobility restriction on the spatial spread of COVID-19 in Japan
Dynamics of anti-Spike IgG antibody level after full BNT162b2 COVID-19 vaccination in health care workers
Higher contact among vaccinated can be a mechanism for negative vaccine effectiveness
Detection of SARS-CoV-2 nucleocapsid antigen from serum can aid in timing of COVID-19 infection
Field performance evaluation of the PanBio rapid SARS-CoV-2 antigen assay in an epidemic driven by 501Y.v2 (lineage B.1.351) in the Eastern Cape, South Africa
Development of quantitative frailty and mortality prediction models on older patients as a palliative care needs assessment tool
Non-targeted metabolomics analysis reveals distinct metabolic profiles between positive and negative emotional tears of humans
Is there an association between daytime napping and cognitive function? A Mendelian randomisation study in the UK Biobank
Updated Model for the USA Summer 2021 CoVID-19 Resurgence