when we reached the hospital, all the midwife also said it's 12 hours. But our doc told us it's 24 hours. haihz ... I did not want to mention our doctor's name here because all these while, she has been a very caring, detailed, patience and soft spoken doctor. But if you guys wanted to know more, you can PM me. Since my complain is not targeting only the doc but the overall experience in pantai bangsar.