Some projects may require comprehensive HIAs,
but most projects will not. For those projects that
do require new data collection, some level of
specialty consulting support may be required.
Local and national public health authorities
should always be consulted, since their
knowledge and expertise is critical and is
grounded in the realities of the project's location
and overall country situation. In addition,
specialized support or an independent review
process may help identify gaps or other issues not
fully considered by an internal team, and may
enhance validity and transparency.