The vision thing.
Harries
U
U
Public Health Research and Resource Centre, Salford.
Popay
J
J
Levelthall
R
R
D000368:Aged; D001766:Blindness / Q000191:economics / Q000628:therapy; D003153:Community Health Services / Q000458:organization & administration*; D006301:Health Services Needs and Demand; D006801:Humans; D009885:Ophthalmology / Q000458:organization & administration*; D011635:Public Health Administration; D013222:State Medicine / Q000458:organization & administration; D006113:United Kingdom; D014786:Vision Disorders / Q000191:economics / Q000628:therapy*