Mothers in Mumbai and Bhopal have ranked their respective cities last in terms of hygiene, while Lucknow and Kolkata occupy top position,u00a0where mothers are quite satisfied about the physical, mental and social aspects of their child's health, according to a survey.

"Frequency of minor illness, frequency of major illness, resistance to disease, weight loss and slow growth were rated as the top five factors contributing to the overall health of children," the survey said.