how many times until 2103 patient 50480 received a inject/infuse nec?
select count(*) from procedures_icd where procedures_icd.icd9_code = ( select d_icd_procedures.icd9_code from d_icd_procedures where d_icd_procedures.short_title = 'inject/infuse nec' ) and procedures_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 50480 ) and strftime('%y',procedures_icd.charttime) <= '2103'