Translations:Advanced Field Epi:Manual 1 - Disease Investigation/40/en

Number at risk = 20 - 0.5*3 - 0.5*2 = 17.5

Diperoleh dari "http://wiki.isikhnas.com/index.php?title=Translations:Advanced_Field_Epi:Manual_1_-_Disease_Investigation/40/en&oldid=36683"