FenoterolAdrenergic beta-AgonistsAtropine DerivativesChlorofluorocarbons, MethaneIpratropiumButoxamineAerosol PropellantsAdrenergic beta-2 Receptor AgonistsBupranololProcaterolAlbuterolReceptors, Adrenergic, beta-2EthanolaminesAerosolsNebulizers and VaporizersBronchodilator AgentsAdministration, Inhalation