Prevalence of and Risk Factors for Levofloxacin-Resistant E. coli Isolated from Outpatients with Urinary Tract Infection.

Purpose: Levofloxacin has been widely used because of its broad spectrum and excellent penetration of the prostate. But levofloxacin-resistant Escherichia coli (E.coli) has been reported all over the world.

Nationwide survey to evaluate the prevalence of varicoceles in South Korean middle school boys: a population based study.

Objective: We carried out a nationwide epidemiological study to evaluate the prevalence and effect of varicoceles on testicular volume in South Korean adolescents. We also investigated the correlation between varicoceles and body mass index (BMI).

Methods: In this prospective study, physical examinations were carried out to assess the presence and severity of varicoceles in middle school boys from six regions of South Korea.