@book{3391,
	author = {Casas, Willie and Zurbano, Joel E.},
	title = {Frontliners now free to choose what vax to get /},
	url = {http://elibrary.doh.gov.ph/cgi-bin/koha/opac-retrieve-file.pl?id=27246d09237aa5cbd5efc2b4ded2f18a}
}