Sentence examples for biological samples were available from inspiring English sources
Finally, we excluded 6 (2.4%) participants because no biological samples were available for exposure analysis.
Consequently, three independent biological samples were available for averaging of each variable measured.
29 This design, however, does mean that only limited data and no biological samples are available in the control group.
Our results of a protective effect of vitamin D intake must be considered as rough, since we only measure the dietary intake of vitamin D. A more complete picture of the vitamin D status could have been supplied through vitamin D levels in blood; however, no biological samples are available.
In all, 813 underwent primary surgery and 575 good quality tumour samples were available for biological analysis.
Unfortunately, no longitudinal infant samples were available.
22 samples were available.
Fifty-nine control samples were available.
*NA, no samples were available.
When biological samples were not available, the diagnosis of AT was based on the clinical and laboratory criteria.
Collecting dates of the biological samples were recorded; whenever this information was not available, we included the year of the reference as proxy and indicated this in the observation.
