9Cox J L, Holden J M, Sagovsky R. Detection of postnatal depression: development of the item edinburgh postnatal depression scale [Jl. Br J Psychiatry, 1987,150:782-786.
10O' Hara M W, Swain A M. Rates and risk of postpartum depression: a meta analysis [J]. Int Rev Psychiatry, 1996,8: 37-54.