Would somebody please comments my sentences?

1- Studies on the quality of information in journal advertising have examined different outcome measures, in a number of countries, at different times and applied different methodologies.

2-Available studies have shown the low quality of information provided by pharmaceutical representatives to physicians. However, literature review has noted of the lack of information about this in Australia.

Regards,
Dean
1- Studies on the quality of information in journal advertising have examined different outcome measures in a number of countries at different times and have applied different methodologies. -- I deleted your commas and added have; I hope I have expressed the correct hierarchy, as your original did not.

2-Available studies have shown the low quality of information provided to physicians by pharmaceutical representatives. However, a review of the literature has revealed the lack of such data for Australia. -- Again, I have tried to clarify where I think you meant information in two different senses; again, I hope my interpretation is correct.

Hi Mister Micawber,

Thanks for your help. Your interpretation is right in both sentences.

Thanks again,

Regards,

Dean