Electronic locking devices, systems, and methods may require the utilization of an electronic key generated by an electronic key generation device. The negotiation process is preferably conducted through a secure online chat program using point-to-point messaging, though the negotiations can take place using the tradition exchanges of phone calls and faxes outside of the confines of an electronic trading system. When mounted to the adaptor, the hole saw and collar rotate relative to the arbor and the retaining nut. Diagnostic, screening, and therapeutic methods utilizing compositions of the invention are also provided. The assembly also includes a plug that is configured for insertion within the terminal block. The client systems may interact with servers or collaboration services, which may receive structured data elements that the clients have published for access by others.