AO-ADL is an aspect-oriented architecture description language. The main contributions of AO-ADL are two. First contribution is the definition of a symmetric composition model, where functional and non-functional concerns are modeled by the same architectural block. Second contribution is the extension of the semantic of connectors with aspectual composition information. In this paper we describe the software architecture of the Health Watcher system using AO-ADL. We present a subset of the functional and extra-functional concerns identified for this system, as well as the compositions among the components modeling them. We specially focus on aspectual compositions to illustrate how the extensions that AO-ADL introduces into connectors provide appropriate support for representing separation of concerns at the architectural level.