Second, barriers at the meso level include the family and community.

This barrier includes not only colonization of new areas across land, but also by sea.

Other barriers faced by adolescents, the research group said, include health insurance benefits that do not cover needed services.

The barriers to greater participation include finance, mobility, and sometimes lack of knowledge about what is available.

It said the barriers included factors besides the availability of vaccines and their costs.

The non-tariff barriers can include wide variety of restrictions to trade.

Barriers may include one or more of the following:

Barriers include universities' autonomous structures and the desire of academic staff to remain independent.

Common barriers to donation include widely held myths and misconceptions about the process.

Current barriers to the construction of a universal digital library include: