กี่ครั้งในปี 2103 ค.ศ. สั่งขั้นตอน Difficile Toxin แล้วไม่จำเป็นที่จะต้องใช้ทุกตาราง
how many times in 2103 a c. difficile toxin procedure was ordered?It is not neccessary to use all the tables.
 vitalperiodic:  vitalperiodicid [ number]  patientunitstayid [ number]  temperature [ number]  sao2 [ number]  heartrate [ number]  respiration [ number]  systemicsystolic [ number]  systemicdiastolic [ number]  systemicmean [ number]  observationtime [ time] 
SELECT COUNT(*) FROM treatment WHERE treatment.treatmentname = 'c. difficile toxin' AND STRFTIME('%y', treatment.treatmenttime) = '2103'