Identification of biomedical journals in Spain and Latin America.

Objectives: Journals in languages other than English that publish original clinical research are often not well covered in the main biomedical databases and therefore often not included in systematic reviews. This study aimed to identify Spanish language biomedical journals from Spain and Latin America and to describe their main features.

Methods: Journals were identified in electronic databases, publishers' catalogues and local registries.

The Cuban Public Registry of Clinical Trials: primary registry of World Health Organization.

Despite the importance of randomized trials for well-informed decisions in health care, a large proportion of the results of these trials are not published, especially when they are negative. Publication bias has a negative impact in the treatment of patients, due to the distorted impression it leads to for new therapies. Clinical Trial Registries help to overcome this by providing transparency in the process of conducting research.