For the new study, Dr. Worobey, Dr. Pekar and their colleagues compared the genomes of 250 coronaviruses, using their genetic similarities and differences to determine their relationships.

Methods Nested case–control design. Cases and controls were identified from two prospective cohort studies using valid injury surveillance methods. Cases were players concussed during a game or ...

Objective: To study the factors associated with oligohydramnios and its related neonatal morbidity and mortality. Materials and Methods: This was a 10-year retrospective nested case-control study ...

In a large (n = 624 cases) nested case-control study, we investigated the association between 152 circulating inflammatory and immune response protein biomarkers and the risk of endometrial cancer. We ...

We conducted a nested case‐control study using the TCR (Taiwan Cancer Registry) linked with the Taiwan National Insurance Claim Database. We matched every case with 4 controls using risk‐set sampling ...

This nested case-control study involved active-duty Air Force servicemen with sera from the Department of Defense Serum Repository. We selected 530 cases and 530 controls individually matched on birth ...

A case-control study at a single institution in Mishima City was conducted. The purpose of this study was to examine in detail the factors that contribute to the development of MRONJ. Medical records ...

We conducted a case-control study nested within the cohort of US active-duty personnel 1996-2014 to assess the association between thyroid autoimmunity, defined by serology, and thyroid cancer ...

We did a nested case-control study comprising incident CHD cases and 1:1 matched controls who were identified from the 10 year follow-up of the China Kadoorie Biobank. Methylation level of baseline ...