They received an intravenous dose of 0.2 IU of vasopressin for a two-minute period to induce cramping episodes on the first day after discontinuing treatment with oral contraceptives.

• 在口服避孕药停用后的第一天，经静脉投予0.；2IU的抗利尿激素，藉此引发2分钟的子宫抽搐。