Internet and information on breast cancer: an overview.

In the past few years, many Internet breast cancer resources have appeared, including medical journals and clinical trial registries. Examples of online breast cancer journals are the The Breast, The Breast Journal, and the Breast Cancer Research and Treatment. These have replicated the experience of general medical and cancer journals such as the British Medical Journal and the Journal of Clinical Oncology. One of the most important cancer registries is the Physician Data Query, which provides information on the National Cancer Institute's clinical trials, most of which are related to breast cancer. Medical guideline databases, institutional websites, medical associations, and non-profit breast cancer organizations provide users with information including news, calendars of international breast cancer events, clinical guidelines and abstracts presented at cancer and breast cancer meetings. Finding high-quality breast cancer literature and websites is relatively easy using appropriate indexes such as Cancerlit, MedlinePlus, and Cancerlinks.