The phrase "affect firstly" is not correct in standard written English.
It is generally not used in formal writing, as "firstly" is often considered unnecessary or awkward.
Example: "The changes in policy will affect firstly the employees' morale."
Alternatives: "primarily affect" or "first and foremost affect".
Respondents associate a positive value/preference to the agroforestry network implementation, although this value is strongly affected firstly by their identity with the landscape and secondly by their income.
Investigations performed in macrophage/monocytes cell lines exposed to increasing doses of H2O2 have revealed that oxidative stress affects firstly the activity and then the expression of SIRT1, which, in turn, controls the mRNA levels of MMP9 [ 83].
There are two types of factors that can affect such extrusions: firstly, natural physical factors, such as the anatomy of the apical constriction [ 2, 8] dentin hardness [ 10], and quantity and momentum of flow of the irrigant [ 7], and secondly, mechanical factors, such as the selection of the final apical size of the instrument [ 23], and instrumentation techniques [ 24].
Firstly, windfalls affect not only the site of the tree knocked over itself but also neighbouring sites due to the damage caused by the tree falling over.
Firstly, enzymes affect both the dynamics of ATP and ADP.
Firstly the affect expressed by single musical features seems to be capable of influencing subsequent word processing at a semantic level, which suggests, that the expression of emotions in music is processed as meaningful by listeners.
Polarization curves showed that the corrosion behavior of anodized coatings was firstly affected by pore diameter.
When more than one cell is affected, the algorithm firstly selects the most important neighboring cells for each faulty cell.
Interestingly, an echocardiographic study of ∼200 patients identified the non-coronary cusp as firstly affected by thickening, suggesting that lower laminar shear stress, in the absence of diastolic coronary flow, may accelerate valvular thickening.
