These other factors are related to the evaluator, the instruments and the measurement technique, including locating the landmarks, measuring arm position in elevation and manipulating the probe.
Differences of the distance between the anatomical landmarks measured by the anesthetist and by ultrasound were evaluated.
The landmarks measured (designated "reference landmarks") were located at either the wing-vein junctions or the vein-margin intersections on the O. excavata (21 landmarks; Additional file 1a, upper wing) and the T. juno wings (18 landmarks; Additional file 1b, upper wing).
The 1970 Clean Air Act was a landmark measure, authorizing federal and state regulations to limit emissions.
The bill, which has been hailed as a landmark measure by anti-tobacco groups, passed the Assembly and the Senate more than a month ago, without a single dissenting vote.
Mr Hague and Jolie will urge G8 members to agree landmark measures to secure justice for survivors of sexual violence and deter perpetrators.
It is, of course, unknown which provisions will survive the horse-trading, but if some are adopted, the legislation would be among the most important for the telecommunications industry since a landmark measure that began deregulation four years ago.
He then worked on the Strategy for UK Life Sciences – with landmark measures, like the Biomedical Catalyst Fund and Patent Box, that have brought over £2bn of new investment into the sector, as well as last year's UK Strategy for Agricultural Technologies.
Giffords faced frequent backlash from the right over her support of the health care reform last year, and had her office vandalised the day the House of Representatives approved the landmark measure.
The landmark measure, introduced by the Blair government 15 years ago this week, has dropped in value in real terms in the past five years after being pegged to wages, which have not kept pace with inflation.
