Welcome to the homepage for the Extra Corporeal Life Support Service at Great Ormond Street Hospital. About usFurther information about the ECLS Service. Conditions we treatDiscover more about the conditions we treat. Clinics and wardsPlan ahead by reading about our clinics and wards. Meet the teamComprehensive staff list from the ECLS Service. ResearchFind out about the ECLS service's research. Contact usDetails on how to contact the ECLS Service.