count the number of times that patient 5561 has received a lab test for reticulocyte count, automated.
select count(*) from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'reticulocyte count, automated' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 5561 )