A.25~30mmHg B.40~60mmHg C.50~80mmHg D.70~100mmHg E.100~150mmHg
A.8周以后 B.10周以后 C.12周以后 D.14周以后 E.16周以后
A.16周以后 B.18周以后 C.20周以后 D.22周以后 E.24周以后