Whereas cardiovascular disease-related mortality has declined in most developed countries, its known prevalence is increasing worldwide, although few data on the causes of heart disease in the ...

Cases and controls were matched one-to-five according to sex, 10-year age group, nationality, number of coexisting medical conditions, calendar week of testing, method of testing (polymerase chain ...

Medical research is essential for advancing the understanding of health, diseases, and treatments. There are many types of studies that serve different purposes. Medical research, or health research, ...