Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Chronic Kidney Disease in Ecuador: An Epidemiological and Health System Analysis of an Emerging Public Health Crisis
Implementation Science Protocol for a participatory, theory-informed implementation research programme in the context of health system strengthening in sub-Saharan Africa (ASSET-ImplementER)
Impact of socio-economic traditions on current tobacco and tea addictions (Siberia 17th to 20th century).
The rapid reemergence of seasonal respiratory viruses in Houston, Texas, after relaxing COVID-19 restrictions
A comparison of four commercially available RNA extraction kits for wastewater surveillance of SARS-CoV-2 in a college population
Immune response to third SARS-CoV-2 vaccination in seronegative kidney transplant recipients: possible improvement by mycophenolate mofetil reduction
A Scaling Law for PCR Positivity in the COVID Second Wave
Analytical performance of a highly sensitive system to detect gene variants using next-generation sequencing for lung cancer companion diagnostics
Effects of Radial Extracorporeal Shockwave Therapy Versus 1% Lidocaine Injection for Myofascial Trigger Points Measured with Elastic Index
Patient symptoms and experience following COVID-19: results from a UK wide survey
Genomic reconstruction of the SARS-CoV-2 epidemic across England from September 2020 to May 2021
The socioeconomic factors that led to unemployment under COVID-19 pandemic among Japanese workers: a prospective cohort study
Serological surveillance of SARS-CoV-2: Six-month trends and antibody response in a cohort of public health workers
The effect of obesity-related traits on COVID-19 severe respiratory symptoms is mediated by socioeconomic status: a multivariable Mendelian randomization study
AIBx, Artificial Intelligence Model to Risk Stratify Thyroid Nodules
Reconstruction of a large-scale outbreak of SARS-CoV-2 infection in Iceland informs vaccination strategies
Detection of choroidal hypoperfusion in giant cell arteritis using swept-source optical coherence tomographic angiography
Distribution and associated factors of hepatic iron -- a population-based imaging study
Building knowledge of university campus population dynamics to enhance near-to-source sewage surveillance for SARS-CoV-2 detection
Prevalence of central obesity and its associated risk factors among adults in Southeast Ethiopia: a community-based cross-sectional study
Effect of seizures on developmental trajectories in children with autism
Analyzing the Impact of a Real-life Outbreak Simulator on Pandemic Mitigation: an Epidemiological Modeling Study
Antigenic determinants of SARS-CoV-2-specific CD4+ T cell lines reveals M protein-driven dysregulation of interferon signaling
Deep Covid - Coronavirus Diagnosis Using Deep Neural Networks and Transfer Learning
Evaluation of seven different rapid methods for nucleic acid detection of SARS-COV-2 virus
Country-level Association of Socioeconomic, Environmental and Healthcare-Related Factors with the Disease-Burden and Mortality Rate of COVID-19