CREATE TABLE table_203_437 (id NUMBER, "year" NUMBER, "laureate" CLOB, "relation" CLOB, "category" CLOB, "rationale" CLOB)

who was the first laureate in physiology or medicine ?
SELECT "laureate" FROM table_203_437 WHERE "category" = 'physiology or medicine' ORDER BY "year" LIMIT 1
SELECT "laureate" FROM "table_203_437" WHERE "category" = 'physiology or medicine' ORDER BY "year" FETCH FIRST 1 ROWS ONLY