(A) Differences in mean Hb by arterial (A) and capillary (C) blood
source compared with venous (V) or cord blood source as the reference* among
infants, children, and adult males (M), females (F), and pregnant women (PW).
(B) Differences in mean Hb by single drops of capillary (C) blood source
compared with pooled capillary blood source as the reference*, right (R) hand
compared with left (L) hand as the standard*, and first venous draw compared
with second venous draw as the standard* among children and adult males (M) and
females (F).