a. Each cell represents the RR and 9% CI for a separate meta- computed using the metan random effects model in Stata. The historical comparisons included some studies with prevalence-based breast canc
BackgroundEpisiotomy, a surgical procedure that enlarges the vaginal opening during childbirth, was common practice until the early 2000s. Other sources, including the World Health Organization (WHO),
Background The combination of asthma and chronic obstructive pulmonary disease (COPD), or ACOS is a recently defined syndrome. The epidemiology of the condition is poorly described and previous resear