Add this result to my export selection Improving health and learning through better water, sanitation and hygiene in schools. An information package for school staff (2019) (PDF) Source: WHO Regional Office for Europe - WHO Europe (Remove filter) 01 November 2019 groups in the case of health problems, such as hormonal imbalances or dysmenorrhoea, that cannot be resolved at school. n If... Type: Evidence Summaries (Remove filter)