For the patient who first came to the hospital on 1991/6/13 who was diagnosed with SJS, what is the total number of his/her Laboratory tests in 1995?
1991/6/13 refers to `First Date` = '1991-06-13'; 'SJS' refers to Diagnosis; total number of his/her Laboratory tests refers to COUNT(ID); 1995 refers to Date
SELECT COUNT(*) FROM Laboratory WHERE ID = ( SELECT ID FROM Patient WHERE `First Date` = '1991-06-13' AND Diagnosis = 'SJS' ) AND STRFTIME('%Y', Date) = '1995'