Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Immediate and mid-term effect of a natural topical product in patients with musculoskeletal pain: randomized, double-blinded, and placebo-controlled clinical trial.
Declining Opioid Distribution to US Hospitals
The impact of co-circulating pathogens on SARS-CoV-2/COVID-19 surveillance. How concurrent epidemics may decrease true SARS-CoV-2 percent positivity.
Elastin degradation markers are elevated in never-smokers with past history of prolonged exposure to secondhand tobacco smoke and are inversely associated with their lung function
Ranking videolaryngoscopes by orotracheal intubation performance: protocol of a systematic review and network meta-analysis of clinical trials at patient level.
Zonal Model of Aerosol Persistence in ICUs: Utilization of Time and Space-resolved Sensor Network
The influence of baseline clinical status and surgical strategy on early good to excellent result in spinal lumbar arthrodesis: a machine learning approach
Mitigation of SARS-CoV-2 Transmission at a Large Public University
Understanding frailty: probabilistic causality between components and their relationship with death through a Bayesian network and evidence propagation
Effectiveness of CoronaVac among healthcare workers in the setting of high SARS-CoV-2 Gamma variant transmission in Manaus, Brazil: A test-negative case-control study
Multi-faceted Semantic Clustering With Text-derived Phenotypes
Second wave of COVID-19 in India could be predicted with genomic surveillance of SARS-CoV-2 variants coupled with epidemiological data: A tool for future
High-cited favorable studies for COVID-19 treatments ineffective in large trials
SARS-CoV-2 Vaccine Induced Atypical Immune Responses in Antibody Defects: everybody does their best
Parental attitudes towards mandatory vaccination; a systematic review
The Trade-off Between Prioritization and Vaccination Speed Depends on Mitigation Measures
Use of Machine Learning for Long Term Planning and Cost Minimization in Healthcare Management
Child mental and behavioral health services during the COVID-19 pandemic: Trends and implications for service outcomes during telehealth expansion
REACT-1 round 13 interim report: acceleration of SARS-CoV-2 Delta epidemic in the community in England during late June and early July 2021
Plasma Markers of Disrupted Gut Permeability in Severe COVID-19 Patients
SARS-CoV-2 vaccination with CoronaVac: seroconversion rate in healthcare workers after 40 days
Significance testing for small annotations in stratified LD-Score regression
COVID-19 breakthrough infection after inactivated vaccine induced robust antibody responses and cross-neutralization of SARS-CoV-2 variants, but less immunity against omicron
Cytoplasmic Expression of LMP1 and its Nuclear Translocation in Nasopharyngeal Carcinoma Correlates with Epithelial-mesenchymal Transition
Lack of Causal Effects or Genetic Correlation between Restless Legs Syndrome and Parkinson's Disease
Foodborne Outbreaks, Product Recalls, and Firm Learning: A Recurrent Event Survival Analysis of U.S. Meat and Poultry Recalls