“…In the field of chronic illness, in which early diagnosis and care are widely urged, evidence is increasing that the socioeconomic and be¬ havioral patterns of long-term patients, their families, and their physicians tend to prevent satisfactory use of existing medical knowledge and community facilities (1)(2)(3)(4)(5)(6)(7)(8)(9). In at least some areas of the United States, for example, rehabilitation centers are inefficiently used be¬ cause patients wait too long before applying for admission (7).…”