<prompt> Translate the following text to EnglishEPA inatambua kutokuwa na uhakika huu, lakini kwa uchambuzi huu, tunadhani uhusiano wa sababu kati ya mfiduo wa PM na vifo vya mapema, kulingana na ushahidi thabiti wa uhusiano kati ya PM na vifo vilivyoripotiwa katika fasihi ya kisayansi.  <response>: EPA acknowledges these uncertainties; however, for this analysis, we assume a causal relationship between exposure to elevated PM and premature mortality, based on the consistent evidence of a correlation between PM and mortality reported in the scientific literature. 