Name the least interval between doses for minimum age being 1st dose at 6 weeks old for the diphtheria-pertussis-tetanus vaccine?
CREATE TABLE table_57458 (
    "Vaccine" text,
    "Minimum Age at 1st Dose" text,
    "Number of Doses" text,
    "Dose" text,
    "Minimum Interval Between Doses" text,
    "Route" text
)
SELECT "Minimum Interval Between Doses" FROM table_57458 WHERE "Minimum Age at 1st Dose" = '6 weeks old' AND "Vaccine" = 'diphtheria-pertussis-tetanus vaccine'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Name the least interval between doses for minimum age being 1st dose at 6 weeks old for the diphtheria-pertussis-tetanus vaccine? ### Input: CREATE TABLE table_57458 (
    "Vaccine" text,
    "Minimum Age at 1st Dose" text,
    "Number of Doses" text,
    "Dose" text,
    "Minimum Interval Between Doses" text,
    "Route" text
) ### Response: SELECT "Minimum Interval Between Doses" FROM table_57458 WHERE "Minimum Age at 1st Dose" = '6 weeks old' AND "Vaccine" = 'diphtheria-pertussis-tetanus vaccine'