7Lennarttsson J, Bengtsson C. Characteristics of anaemic women. The population study of women in Gteborg 1968-1969 [ J ]. Scand J Hea-matol, 1979,22 ( 1 ) : 17 - 24.
8Kidanto HL, Mogren I, Lindmark G, et al. Risks for preterm delivery and low birth weight are independently increased by severity of ma- ternal anaemia[ J]. S Afr Med J,2009,99 (2) :98 - 102.
