Translations:Basic Field Epi: Manual/336/en

Revisi per 25 Agustus 2014 09.14 oleh FuzzyBot (bicara | kontrib) (Importing a new version from external source)
(beda) ← Revisi sebelumnya | Revisi terkini (beda) | Revisi selanjutnya → (beda)

Simple exposure to the agent does not mean disease will occur. There are many causes and many combinations of these causes required for disease to occur.