Add punctuation: In this trial the effects of 30 mg betacarotene and 25000 units vitamin A retinyl palmitate were weighed against placebo using 18314 men and women 22 of the study population had earlier been exposed to asbestos 39 had been smokers and 60 were currently smokers
A: In this trial the effects of 30 mg beta-carotene and 25,000 units vitamin A (retinyl palmitate) were weighed against placebo using 18,314 men and women. 22% of the study population had earlier been exposed to asbestos, 39 % had been smokers, and 60 % were currently smokers.

Add punctuation: nshwfpdll file fixer DLL Suite can perfectly fix nshwfpdll missing in Windows 78XPVista Besides nshwfpdll errors always come along with Registry problem so that we highly recommend you install MaxUtilities for register issue
A: nshwfp.dll file fixer - DLL Suite can perfectly fix nshwfp.dll missing in Windows 7/8/XP/Vista. Besides, nshwfp.dll errors always come along with Registry problem so that we highly recommend you install MaxUtilities for register issue.

Add punctuation: These races run from Monday through Saturday and are open to beginners only
A:
These races run from Monday through Saturday and are open to beginners only.