Congress has mandated that the registry be comprehensive, so more studies, particularly drug company trials, will probably be added.
For advanced studies, particularly in subjects like archaeology and geology, the availability of museum collections can be indispensable.
Further studies, particularly in human volunteers, are necessary.
The independent variables included are based on prior empirical studies, particularly Arthur [5].
In some studies, particularly migraine with aura has been found to be associated with endothelial dysfunction.
Many clinical and biomechanical research studies, particularly in orthopaedics, nowadays involve forms of movement analysis.
Observational studies, particularly case series, represent the majority of the current hypospadias research.
X-ray free-electron lasers offer exciting opportunities for time-resolved studies, particularly of biomolecules.
The species definition could be challenging in the light of taxonomic studies, particularly when the available evidence is limited.
In risk factor modification studies, particularly in cholesterol-lowering trials, coronary artery ED has been demonstrated to be reversible.
Additional studies, particularly well-designed case-control studies among very young children and prospective birth cohort studies, are needed.
