Right atrial lesions do not improve the efficacy of a complete left atrial lesion set in the surgical treatment of atrial fibrillation, but they do increase procedural morbidity.

Objective: Some have suggested the superiority of biatrial versus left atrial lesions. We sought to analyze our experience.

Methods: We retrospectively reviewed 305 consecutive patients from 2007 to 2011.

Percutaneous treatment of mitral regurgitation: current status and future directions.

The burgeoning field of catheter-based, percutaneous valve intervention takes an interdisciplinary approach to mitral valve regurgitation with the goal of maximizing clinical outcomes and minimizing procedure-associated morbidity. This exciting field continues to push the boundaries of technological innovation as it expands the armamentarium available to treat valvular disease. Around the world teams are working to create a catheter-based approach that is practical and durable.

Sun exposure and non-Hodgkin lymphoma: a population-based, case-control study.

To investigate the association between sun exposure and risk of non-Hodgkin lymphoma (NHL) by histologic subtypes and to explore whether or not vitamin D intake modify sun-NHL association, we analysed data from a population-based, case-control study conducted in Nebraska between 1999 and 2002. Information on sun exposure during the spring, summer, fall and winter was collected from 387 cases and 535 controls by telephone interview. We found no association between seasonal sun exposure and risk of NHL.