A pair of female Siamese twins joined at the belly have been successfully separated by doctors in Shenzhen, Guangdong province. The girls are understood to be in critical condition and even their parents have not been allowed to spend time with them. The parents of the twins say that doctors had only told them during their three ultrasound checks that they would have twins but it was not until the day of the caesarian operation did they realise that the girls were conjoined. Four days after birth, the girls were admitted to the Shenzhen Children’s Hospital. At that time, they weighed only 4.2kg in total, but grew to 9.6kg before doctors decided to go ahead with the operation. This is only the second case of conjoined twins to be handled by Shenzhen doctors.