This randomised, blinded laboratory study was approved by the National Committee on Animal Research Ethics (2014 15 0201-00421; Glostrup, Denmark) and agreed with the principles of Laboratory Animal Care [32].
For the laboratory design, milled straw samples from the polythene tunnel experiment were re-randomised for laboratory processing.
No aspect of human behaviour is off-limits and a miscellany of methods are in vogue, adding laboratory experiments, randomised trials and computer simulations to the traditionalist's blackboard and chalk.
Ten healthy volunteers participated in a double blinded, randomised, placebo controlled, crossover laboratory study in order to determine whether a low dose of ketamine potentiated the antinociceptive effect of fentanyl without causing an increase in sedative effects.
Thirty-two patients were screened, of which 24 were randomised (eight were not eligible, four had abnormal laboratory values, three withdrew consent and one had an abnormal ECG).
Patients randomised to exercise training will attend an exercise physiology laboratory up to three times weekly for supervised aerobic interval training sessions of one hour in total duration.
In this study, a multicentre randomised controlled double-blind experimental animal study was performed in three different laboratories [ 4].
We randomised only practices at least 8-10 km from Zurich and Winterthur where laboratories with specialised diagnostic systems are less available.
The participants randomised to prednisone and placebo did not differ significantly in age or any quantitative or laboratory measure (table 3).
C57BL/6 mice undergoing the menstrual protocol were randomised using Microsoft Excel to standard conditions (21% O2) or incubation in a hyperoxic chamber (75% O2, Coy laboratory Products, Michigan, USA) at the time of P4 withdrawal (T0) until sacrifice (T8 or T24).
