3Bringhenti I, Moraes - Teixeira JA, Cunha MR, et al. Maternal obe-sity during the preconception and early life periods alters pancreatic development in early and adult life in male mouse offspring [ J ]. PLoS One, 2013, 8(1) : e55711.
4Witt WP, Wisk LE, Cheng ER, et al. Preconception mental health predicts pregnancy cComplications and adverse birth outcomes: a na- tional population- based study [ J]. Matem Child Health J, 2012, 16(7) :1525 - 1541.
5The US Centers for Disease Control and Prevention. Recommenda- tions to improve preconception health and health care - united states E EB/OLI. I2006 - 04 - 211. http://www, edc. gov/mmwr/ pre- view/mmwrhtml/rrS506 al. htm.
6WHO. Report of meeting to develop a global consensus on preconcep- tion care to reduce maternal and childhood mortality and morbidity [ R]. 2012.
7Atrash 1-1, Jack BW, Johnson K. Preconception care: a 2008 update[J]. Curt Opin 0bstet Gynecol, 2008, 20(6) :581 -589.
8CDC: roadmap for preconception health care[J]. Lancet, 2006, 367 (9525) : 1792.
9Brown-Bryant R, Brumbaugh K. A perspective on CDC's efforts in safe motherhood: 2001 to the present [ J ]. J Womens Health (Larch- rot), 2010,19(5) :833 -836.
10CDC Division of Reproductive Health. CPONDER - CDC$ PRAMS Online Data for Epidemiologic Research [ EB/OL ]. [ 2010 - 03 - 19 ] http ://www. cdc. gov/PRAMS/CPONDER, htm.