Instruct: Identify the main category of Medrxiv papers based on the titles.
Query: Posttraumatic Stress Disorder and the Nature of Trauma in Patients with Cardiovascular Diseases: A Case-Control study
Moment-to-moment fluctuations of hemodynamic responses in posterior default mode networks differentially predict level of attentional lapses in adolescents with Attention-Deficit/Hyperactivity Disorder
Detection and Quantification of Infectious Severe Acute Respiratory Coronavirus-2 in Diverse Clinical and Environmental Samples from Infected Patients: Evidence to Support Respiratory Droplet, and Direct and Indirect Contact as Significant Modes of Transmission
A prospective evaluation of the analytical performance of GENECUBE(R) HQ SARS-CoV-2 and GENECUBE(R) FLU A/B
A mathematical model for repetitive behaviors of Covid-19
Association between work attendance when experiencing fever or cold symptoms and company characteristics and socioeconomic status in the COVID-19 pandemic in Japanese workers: a cross-sectional study
A Framework for Advancing Sustainable MRI Access in Africa
Self-reported adaptability among postgraduate dental learners and their instructors: accelerated change induced by COVID-19
Correlation between continuous Positive end-expiratory pressure (PEEP) values and occurrence of Pneumothorax and Pneumomediastinum in SARS-CoV2 patients during non-invasive ventilation with Helmet.
Evidence for Peroxisomal Dysfunction and Dysregulation of the CDP-Choline Pathway in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Reducing Domain Shift For Mitosis Detection Using Preprocessing Homogenizers
Socio-economic deprivation and cancer incidence in England: Quantifying the role of smoking
Ultrasonic Artificial Intelligence Shows Statistically Equivalent Performance for Thyroid Nodule Diagnosis to Fine Needle Aspiration Cytopathology and BRAFV600E Mutation Analysis Combined
Thalamic deep brain stimulation modulates circadian and infradian cycles of seizure risk in epilepsy
Accuracy-time optimisation with cost-sensitive feature selection for Alzheimer's disease diagnosis
SARS-CoV-2 variant transmission in a community-health population (Mexico City, Mexico)
SARS-CoV-2 seropositivity and subsequent infection risk in healthy young adults: a prospective cohort study
Development of a Metastatic Uveal Melanoma Prognostic risk Score (MUMPS) for use in patients receiving immune checkpoint inhibitors
Prediction of severe COVID-19 infection at the time of testing: A machine learning approach
Near real-time determination of B.1.1.7 in proportion to total SARS-CoV-2 viral load in wastewater using an allele-specific primer extension PCR strategy
Digital contact tracing contributes little to COVID-19 outbreak containment
Interdependencies between cellular and humoral immune responses in heterologous and homologous SARS-CoV-2 vaccination
Massive social protests amid the pandemic in selected  Colombian  cities:  Did  they increase COVID-19 cases?
Dupilumab use is associated with protection from COVID-19 mortality: A retrospective analysis.
The impact of retracted randomised controlled trials on systematic reviews and clinical practice guidelines: a meta-epidemiological study
Immune Correlates Analysis of a Single Ad26.COV2.S Dose in the ENSEMBLE COVID-19 Vaccine Efficacy Clinical Trial