title: The power of one and its cost.
authors: Robert J
authors: RJ
authors: Norman
mesh_terms: D017046:Cost Savings; D005260:Female; D005380:Financing, Government; D006801:Humans; D008297:Male; D009099:Multiple Birth Offspring / Q000706:statistics & numerical data*; D011247:Pregnancy; D027724:Reproductive Techniques, Assisted / Q000191:economics*; D056826:Single Embryo Transfer / Q000191:economics*