One aspect of this invention embodies a method of messaging upon a network involving at least one physician, at least one patient and a workflow engine. Each physician operates a computer from time to time capable of receiving and sending messages upon the network at a corresponding address on the network....http://www.google.es/patents/US20020062230?utm_source=gb-gplus-sharePatente US20020062230 - Message and program system supporting communication
Message and program system supporting communication