avg_age_m	Average male age
avg_age_w	Average women age
count_m	Number of males
count_w	Number of women
CT	Computer Tomography
max_age_m	Highest age in male group
max_age_w	Highest age in women group
min_age_m	Lowest age in male group
min_age_w	Lowest age in women group
MRI	Magnetic Resonance Imaging
na	not applicable
ns	not specified
WHO	World Health Organization