An apparatus, method, and computer readable medium is disclosed for synchronizing a performance of a plurality of presentation content portions at a network node, wherein, e. The compounds consist of a carbocyanine dye for visualization, photosensitizer for photodynamic treatment, and tumor receptor-avid peptide for site-specific delivery of the probe and phototoxic agent to diseased tissues A combination of these elements takes full advantage of the unique and efficient properties of each component for an effective patient care management. Thus, inconvenience caused by the IP phone being set as the default output is overcome.