SIR - We were very sorry to hear about the tragic death of 27-day-old baby Zach Hartshorne (Worcester News, August 31). This is a terrible reminder that a family suffers the tragedy of a cot death nearly every day in the UK. It remains the leading cause of death for babies over one month old and there is a desperate need for more research and support for bereaved families. For a free copy of our BabyZone booklet, giving details of our research-based infant care advice, or for support of other information, readers may call our helpline on 020 7233 2090 or visit our website at www.fsid.org.uk STACEY KERR Foundation for the Study of Infant Deaths.