Gwybodaeth ychwanegol gan y Samariaid yn dilyn y cyfarfod ar 10 Ionawr – cytunwyd i rannu'r adroddiad canlynol: adroddiadSefydliad Iechyd y Byd (Growing up unequal: gender and socioeconomic differences in young people's health and well-being. Health Behaviour in School-aged Children (HBSC) Study: International Report from the 2013/14 Survey (WHO))