A rheology modifier copolymer of formula wherein A is a macromonomer, B is an acrylic or methacrylic acid or salt thereof, C is a C1-C8 ester of acrylic acid, D is an associative monomer, and when present E is a crosslinking monomer. The adjustable shelving unit may include a central shelf unit and at least one extension shelf unit. Applicants are enrolled in the service provider system as members. And, bit and power profiles are formed that are utilized to control the modulation scheme by which data is modulated upon the different subcarriers. A communication apparatus enables the healthcare professional to remotely communicate with and further assess the patient and subsequently administer the treatment.