"confirmation was obtained" is correct and usable in written English.
You can use it when you need to express that you have received assurance or proof about something. For example, "After sending the final proofs to the client, we obtained confirmation that they were satisfied with the project."
Regarding the diagnostic criteria used, most cases were confirmed by clinical and epidemiological criteria, and laboratory confirmation was obtained in a little more than one-third of cases.
b Confirmation was obtained with computed tomography.
Experimental confirmation was obtained that volatile antioxidants can be transferred over a relatively large distance.
Laboratory confirmation was obtained by use of electron microscopy (EM) to observe poxvirus particles in infected cell cultures.
For "Cu-rich, Zn-poor" films, further experimental confirmation was obtained of the previously detected effect of the enhancement of cation disorder under intense optical excitation.
In cases of potential oligometastatic disease on both CT and PET-CT or in cases of discordance between the two imaging modalities, histological confirmation was obtained through percutaneous biopsy or surgical excision.
The confirmation was obtained by combining the first-principle calculations with a series of experiments: Selected Area Electron Diffraction, High Resolution Transmission Electron Microscopy, Raman, Gracing Incident X-ray Diffraction and X-ray Photoelectron Spectroscopy.
In pure acetonitrile, confirmation was obtained for the previously postulated mechanism which involved reaction at the anode of electrogenerated halogen with diethyl malonate anions which had been generated at the cathode.
In DLD1 human colon carcinoma cells pretreated with increased TRAIL doses and also in murine melanoma B16/F10 cells treated with poly L-glutamic acid) poly L-glutamicTXL), Sacid(99mTc)-paclitaxelwed selective binding to apoptotic cells in vitro; confirmation was obtained with TUNEL staining and autoradiography.
Categorizing extrudate distortions as surface roughness, periodic bulk distortions and gross shape distortions, definitive confirmation was obtained that the site of gross shape distortions is at the entry orifice, that of periodic bulk distortions is in the capillary interior and those manifest as surface effects at the capillary exit.
Further confirmation was obtained with EMG recordings; a decrease in EMG tone was concomitant with nREM to REM alternations.
