@book{164464,
	author = {Yassmen Hassan Ahmed Moustafa and Yasmin Essam El Din Mohamed Abdallah},
	title = {Cervical strain ratio in ultrasound elastography as a predictor of spontaneous preterm delivery, is it of value? /},
	year = {2022.},
	url = {http://172.23.153.220/th.pdf}
}