@book{1249,
	author = {Briggs, Gerald G.  and  Towers,  Craig V.},
	title = {Drugs in pregnancy and lactation : a reference guide to fetal and neonatal risk / Gerald G. Briggs, Craig V. Towers, Alicia B. Forinash.},
	publisher = {Williams and Wilkins},
	year = {1990},
	address = {Baltimore},
	edition = {4th ed.}
}