Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: SARS-CoV-2 testing and COVID-19 related primary care use among people with citizenship, permanent residency, and temporary immigration status in British Columbia: Cross-sectional analysis of population-based administrative data
Essential Indicators of Quality in Primary Care Settings: An Evidence-Based, Structured, Expert Approach
Genomic profiles of Covishield and Covaxin breakthrough SARS-CoV-2 strains from Odisha, India
Green spaces, especially forest, linked to lower SARS-CoV-2 infection rates: A one-year nationwide study
Plasma S1P links to hypertension and biomarkers of inflammation, metabolism and cardiovascular disease - findings from a translational investigation
Validating saliva as a biological sample for cost-effective, rapid and routine screening for SARS-CoV-2
A non-systematic signal-correction error in a commercial multiple-breath washout device significantly impacts outcomes in children and adults
Assessing the heterogeneity in the transmission of infectious diseases from time series of epidemiological data
A year of genomic surveillance reveals how the SARS-CoV-2 pandemic unfolded in Africa
Clinical implementation of a machine learning system to detect deteriorating patients reduces time to response and intervention
The economic burden of low back pain in KwaZulu-Natal, South Africa: a prevalence-based cost-of-illness analysis from the healthcare provider's perspective.
Investigating the relationship between serum ACE 2 level and COVID-19 patients' prognosis: a cross-sectional study
I was facilitating everybody else's life. And mine had just ground to a halt: the COVID-19 pandemic and its impact on women in the UK
Race-ethnicity and Perceptional Determinants of COVID-19 Vaccination Intentions: A Cross-sectional Study Among Health Workers and the General Population in the San Francisco Bay Area
Longitudinal associations between perceived stress and anhedonia during psychotherapy
Distinct metabolic features of genetic liability to type 2 diabetes and coronary artery disease: a reverse Mendelian randomization study
Can 10x cheaper, rapid air filtration using a wide range of DIY options complement commercial HEPA purifiers to help control the pandemic?
Online prescribing for sexually transmitted infections 	- what is on offer? An evaluation of internet pharmacies based in the United Kingdom
Demonstrate, observe, assist perform (DOAP) versus structured educational video (SEV) in imparting standard skill in male urinary bladder catheterisation
The individual and global impact of copy number variants on complex human traits
Drug repurposing of metformin for Alzheimer disease: Combining causal inference in medical records data and systems pharmacology for biomarker identification
The COVID-19 Infodemic: The complex task of elevating signal and eliminating noise.
The immunogenicity and safety of different COVID-19 booster vaccination following CoronaVac or ChAdOx1 nCoV-19 primary series
Internalizing Problems Before and During the COVID-19 Pandemic in Dutch Children and Adolescents with and without Pre-Existing Mental Health Problems
SARS-CoV-2 UK, South African and Brazilian Variants in Karachi- Pakistan
Equitable Vaccine Access within an Age-Based Framework