Tiêm t?nh m?ch : (B?nh nhân c?n ???c cung c?p ?? n??c tr??c khi tiêm t?nh m?ch ibuprofen):The emergence of blockchain engineering enabled new kinds of organizational structures. Decentralized autonomous companies (DAOs) are key samples of revolutionary businesses which will run autonomously and with out a central authority. Có ?? c? s? v?t ch?