=LDR 00000nam 2200000 4500 =001 INLIS00000000002838 =005 20260711103802 =082 ##$$a NONE =100 1#$$a Robert H Friis =245 1 $$a Epidemiology 101 /$c Robert H Friis =260 ##$$c 2010 =650 ##$$a Ebook