Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Toxic heavy metals in the breast milk of diabetic and non-diabetic postpartum mothers in Yenagoa, Nigeria
Development and validation of a multiple-choice question-based delirium care knowledge quiz for critical care nurses
Dementia is strongly associated with medial temporal atrophy even after accounting for neuropathologies
Disease-specific contribution of pulvinar dysfunction to impaired emotion recognition in schizophrenia
What level of neutralising antibody protects from COVID-19? .
Epidemiological Risk Factors of SARS-Cov-2 Infections
Estimating Cuff-less Continuous Blood Pressure from Fingertip Photoplethysmogram Signals with Deep Neural Network Model
Quantifying contact patterns: development and characteristics of the British Columbia COVID-19 population mixing patterns survey (BC-Mix)
SPEEDS: A Portable Serological Testing Platform for Rapid Electrochemical Detection of SARS-CoV-2 Antibodies
SARS-CoV-2 antibody prevalence and determinants of six ethnic groups living in Amsterdam, the Netherlands: a population-based cross-sectional study, June-October 2020
A convergence based assessment of relative differences in age-stratified susceptibility and infectiousness for SARS-CoV-2 variants of B.1.1.7 lineage
Prolonged activation of nasal immune cell populations and development of tissue-resident SARS-CoV-2 specific CD8 T cell responses following COVID-19
Factors linked to changes in mental health outcomes among Brazilians in quarantine due to COVID-19
Hemodynamic Differences Between Women and Men with Elevated Blood Pressure in China
Place of preperitoneal pelvic packing in severe pelvic traumatisms: About 20 cases performed in a French military level one trauma center
A fourth dose of the mRNA-1273 SARS-CoV-2 vaccine improves serum neutralization against the delta variant in kidney transplant recipients
Genomics-informed outbreak investigations of SARS-CoV-2 using civet
Pandemic-related decline in injuries related to women wearing high-heeled shoes: Analysis of U.S. data for 2016-2020
Evaluating social and spatial inequalities of large scale rapid lateral flow SARS-CoV-2 antigen testing in COVID-19 management: An observational study of Liverpool, UK (November 2020 to January 2021)
Gut Microbiome Predicts Clinically Important Improvement in Patients with Rheumatoid Arthritis
Male-Female Disparities in Years of Potential Life Lost Attributable to COVID-19 in the United States: A State-by-State Analysis
Muscle cells of sporadic ALS patients secrete neurotoxic vesicles
Vaccine Effectiveness for the COVID-19 in Japan
Mortality among Care Home Residents in England during the first and second waves of the COVID-19 pandemic: an analysis of 4.3 million adults over the age of 65
Impact of vaccination on SARS-CoV-2 cases in the community: a population-based study using the UK COVID-19 Infection Survey
Serial interval and transmission dynamics during the SARS-CoV-2 Delta variant predominance in South Korea