共 64 条
[3]
AVELING W, 1979, LANCET, V2, P71
[6]
BROWNE O, 1950, J OBSTET GYN BRIT EM, V57, P573
[7]
COLEMAN AJ, 1972, ANAESTHESIA, V27, P373, DOI 10.1111/j.1365-2044.1972.tb08241.x