An incompatibility problem during a virtual environment migration from a first host to a second host can be addressed by changing a configuration of the virtual environment andor by migrating the virtual environment to a host other than the second host. The bushing defines an axis and includes a bushing body and a face plate which is welded to the bushing body via a weld seam and has a contact surface which is raised in relation to the weld seam, as viewed in a direction of the axis. It can be best practiced by analyzing biochemical markers, comprising measuring in a sample the concentration of anti-CCP and serum amyloid A and correlating the concentrations determined to the absence or presence of rheumatoid arthritis. The conduits interconnect, thereby forming a single resonance chamber.