adj.预想的
Other studies indicate that preconceptional vitamin supplementation can increase fertility. 其他研究表明,孕前维生素补充剂可以生育能力。
Keywords Preconceptional counseling;Intended pregnancy;Psychology; 孕前咨询;计划妊娠;心理;
Keywords premarital medical examination（PME）;preconceptional counseling;birth defects;primary prevention; 婚前医学检查;孕前咨询;出生缺陷;一级预防;
preconcept 前概念
