Key points are not available for this paper at this time.
Mark C. Berger, Dan A. Black, Child Care Subsidies, Quality of Care, and the Labor Supply of Low-Income, Single Mothers, The Review of Economics and Statistics, Vol. 74, No. 4 (Nov., 1992), pp. 635-642
Berger et al. (Sun,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: