การทดสอบในห้องปฏิบัติการที่พบบ่อยที่สุดสามอันดับแรกในปี 2103 คืออะไร?ไม่จำเป็นต้องใช้ตารางทั้งหมด
what were the top three most common lab tests in 2103?It is not neccessary to use all the tables.
 diagnoses_icd:  row_id [ number]  subject_id [ number]  hadm_id [ number]  icd9_code [ text]  charttime [ time] 
SELECT d_labitems.label FROM d_labitems WHERE d_labitems.itemid IN (SELECT t1.itemid FROM (SELECT labevents.itemid, DENSE_RANK() OVER (ORDER BY COUNT(*) DESC) AS c1 FROM labevents WHERE STRFTIME('%y', labevents.charttime) = '2103' GROUP BY labevents.itemid) AS t1 WHERE t1.c1 <= 3)