The phrase "additional information was obtained" is correct and usable in written English.
You can use it when discussing the acquisition of more details or data in a report, research, or any context where information gathering is relevant.
Example: "After conducting the interviews, additional information was obtained that helped clarify the participants' responses."
Alternatives: "further details were gathered" or "more data was acquired."
In addition to literature, additional information was obtained from various genome resources (OMIM, http://www.ncbi.nlm.nih.gov/sites/entrez?db=omim; NCBI GeneBank and NCBI Locuslink http://www.ncbi.nlm.nih.gov/; Ensembl http://www.ensembl.org/index.html).html
Additional information was obtained through focused group discussion, key informant interview, field observation and informal discussion while community watershed management practices.
Each study was again graded: excellent (excellent image quality, no confirmation with Sonosite needed), adequate (slightly less informative but adequate to proceed), marginal (confirmation and additional information was obtained with the Sonosite), or poor (inadequate to proceed without additional confirmation/remarking).
Additional information was obtained by electrochemically modulated IR reflectance spectroscopy (EMIRS).
Additional information was obtained with mercury porosimetry, gravimetric water content, textural and mineralogical characterization.
Additional information was obtained by linkage to the hospital's electronic birth record.
Additional information was obtained from references identified from within selected articles, from additional review articles, and from guidelines by organizations, including the American College of Obstetricians & Gynecologists.
A search of the literature was performed; additional information was obtained in work visits to national occupational disease institutes in Germany, France and Belgium, in annual reports and national statistics on occupational diseases.
The effect in this crystallisation is of major importance, causing a reduction of the time necessary to attain 50% of the total transformation by a factor of more than 4. Additional information was obtained from microhardness measurements.
Additional information was obtained from 32 radio-tracked young eagles and specific field surveys.
Additional information was obtained from medical records.
