@book{8307,
	author = {Yamada, Tadataka.},
	title = {Textbook of gastroenterology},
	publisher = {Lippincott Williams & Wilkins,},
	year = {1999.},
	address = {Philadephia :},
	edition = {3rd ed.},
	url = {https://books.google.com.pk/books?id=XNYQk2YlkTcC&q=9780397587353&dq=9780397587353&hl=en&sa=X&ved=2ahUKEwj_9_7i4870AhVPtaQKHb4FCJcQ6AF6BAgFEAI}
}