List ID, sex and date of birth of patient whose total protein (TP) below the lower range of the normal index.
total protein (TP) below the lower range of the normal index refers to TP < 6.0
SELECT DISTINCT T1.ID, T1.SEX, T1.Birthday FROM Patient AS T1 INNER JOIN Laboratory AS T2 ON T1.ID = T2.ID WHERE T2.TP < 6.0