Retail health clinics move to treat complex illnesses, rankling doctors

Retail health clinics are adding treatments for chronic diseases to their repertoire, hoping to find steadier revenue but putting the clinics into greater competition with doctors' groups and hospitals. The new strategy comes as an initial thrust by clinics providing basic services fizzled. As part of their efforts to halt losses at the clinics, the chains are lobbying for more insurance coverage, and angling for a place in pending healthcare reform legislation.