Blindness survey methods: response from Sudan study authors.
Ngondi
Jeremiah
J
Ole-Sempele
Francis
F
Onsarigo
Alice
A
Matende
Ibrahim
I
Baba
Samson
S
Reacher
Mark
M
Matthews
Fiona
F
Brayne
Carol
C
Emerson
Paul M
PM
D001766:Blindness / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D015995:Prevalence; D012107:Research Design; D013397:Sudan / Q000453:epidemiology; D014787:Vision Tests