The sampling size and sampling models are depicted in Figure 1 ... For serum, approximately 8–10 mL blood was drawn from the jugular vein using disposable needles, collected in a 10 mL vacutainer tube ...

The biophilic elements or combinations with the largest effect size and p < 0.1 in the short-term VR trial will be used in real ... Blood samples will be collected in ethylenediaminetetraacetic acid ...

Blood samples were drawn into 7mL Vacutainer ® tubes containing heparin-lithium as anticoagulant and centrifuged at 3000g for 10 minutes at 4°C. Two 1mL plasma aliquots were prepared and frozen ...