Infections and other illnesses of children in day-care centers in Helsinki I: Incidences and effects of home and day-care center variables
A. Pönkä, Tuija Nurmi, Eira Salminen, E. NykyriVolume:
19
Year:
1991
Language:
english
Pages:
7
DOI:
10.1007/bf01644951
File:
PDF, 1.13 MB
english, 1991