45 Litigation support services; Litigation support services, namely, damages calculation; Regulatory compliance consulting in the fields of healthcare, energy, and utilities, telecommunications, entertainment, transportation, natural resources, pharmaceuticals, financial services, consumer products, fair lending practices and labor and employment; Consulting regarding legal and economic regulations; Consulting regarding legal and economic regulations in the field of antitrust, intellectual property, finance, and financial economics; Expert witness services in legal matters in the fields of business valuation, energy, healthcare, finance, financial economics, accounting, mergers and acquisitions, intellectual property, patent, trademark, trade secrets, copyright, labor and employment, insurance economics, and competition; Fraud investigation services; Cybercrime investigation services; White-collar crime investigation services