@book{61017,
	author = {Campbell, Michael J., and Walters, Stephen John,},
	title = {Medical statistics :},
	publisher = {WILEY BLACKWELL,},
	year = {c2021.},
	address = {USA,},
	edition = {Fifth edition.},
	note = {Michael J. Campbell's name appears first in earlier editions.},
	url = {NRK/1039}
}