Definition: In this task, you are given an abstract of article. Your task is to generate title for this article. Preferred titles are under thirty words.
Input: Clomifene is widely used for inducing ovulation.1 It is structurally related to diethylstilbestrol, which has been linked to vaginal and cervical clear cell adenocarcinoma in women exposed in utero. The adverse effect is less severe in sons, although links to testicular cancer and urogenital anomalies, such as epididymal cysts, have been reported.2 3 A recent study also found an increased risk of hypospadias in the sons of women exposed to diethylstilbestrol in utero.4 Clomifene has a half life of about five days, but its metabolites have been found in blood samples on day 22 of the menstrual cycle and in faeces up to six weeks after administration.5 The occurrence of hypospadias may be increasing. Little is known about the risk of hypospadias in boys born to women who have used clomifene to induce ovulation.   ### Methods and results  Our case-control study was done in the Danish counties of North Jutland, Aarhus, Viborg, and …

Use of clomifene during early pregnancy and risk of hypospadias: population based case-control study.