men who have limited exposure to sunlight, such as women who are predominantly housebound, or who usually remain covered when outdoors.Women who eat a diet particularly low in vitamin D, such as women who consume no oily fish, eggs, meat, vitamin D-fortified margarine or breakfast cereal.Women with a pre-pregnancy body mass index (BMI) above 30 kg/m2.Lifestyle:Advice on avoiding food-borne infecti