Occupational UV-Exposure is a Major Risk Factor for Basal Cell Carcinoma: Results of the Population-Based Case-Control Study FB-181.

Objective: The aim of this study was to investigate the role of occupational and nonoccupational ultraviolet (UV)-exposure concerning the development of basal cell carcinoma (BCC).

Methods: We undertook a population-based multicenter case-control study. Patients with first incident BCC (n = 836) were propensity score matched by age and sex to controls without skin cancer (n = 836).

Risk factors for recurrence of clostridium difficile-associated diarrhoea.

Background/aims: Clostridium difficile associated disease (CDAD) is one of the most common causes of hospital-acquired diarrhea. Despite increasing incidence of clostridium difficile-associated diarrhea, there are few data on risk factors associated with its relapse.

Methodology: We studied retrospectively possible risk factors for the recurrence of CDAD; 124 patients fulfilled the criteria of CDAD during the study period between January 2006 and July 2009.