how much is patient 62983's total stool out ileostomy output on the first icu visit?
select sum(outputevents.value) from outputevents where outputevents.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 62983 ) and icustays.outtime is not null order by icustays.intime asc limit 1 ) and outputevents.itemid in ( select d_items.itemid from d_items where d_items.label = 'stool out ileostomy' and d_items.linksto = 'outputevents' )