Medical care in aluminum city. II. The selection and use of specialists.
D000328:Adult; D000367:Age Factors; D003625:Data Collection; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D008511:Medicine; D008875:Middle Aged; D010414:Pennsylvania; D010548:Personal Health Services; D012737:Sex Factors; D013038:Specialization