Wakefulness-Promoting AgentsReceptors, Adrenergic, alpha-2Receptor, Serotonin, 5-HT1BReceptor, Serotonin, 5-HT2BReceptor, Adenosine A2BReceptors, Adrenergic, alpha-1Receptors, Complement 3bReceptor, Endothelin BDexmedetomidineReceptors, Serotoninalpha 1-AntitrypsinReceptors, ComplementSerotonin Receptor AgonistsGenotypePolymorphism, Single NucleotideReceptors, Adrenergic, alphaSerotonin AntagonistsHypoxia-Inducible Factor 1, alpha SubunitGenetic Predisposition to DiseaseReceptors, VasopressinGenetic VariationReceptors, EndothelinComplement C3b