The phrase "and further ascertained" is correct and usable in written English.
It can be used when indicating that additional information or confirmation has been obtained after an initial finding or conclusion.
Example: "The results of the investigation were reviewed, and further ascertained that the initial hypothesis was indeed accurate."
Alternatives: "and additionally confirmed" or "and further verified".
The study also provided an insight into the intricacies that are the same and further ascertains that the mean overall survival, cure fraction, and overall survival rate at landmark time points represent the more appropriate endpoints.
Female adults were identified morphologically and their identity was further ascertained by PCR amplification and sequencing of the first internal transcribed spacer (ITS-1) of rDNA [ 4].
Death, MI and IS/TIA cases were detected using an automatic computer search and IS/TIA cases were further ascertained by manual review of medical records.
The relationship of these clinical peculiarities and specific pattern of vascular damage in MDD and HT need to be further ascertained.
The aim of this study was therefore to ascertain existing relationships between CD4 count and TLC and to further ascertain if TLC could be used as a surrogate marker for CD4 counts in the initiation of antiretroviral therapy in resource-limited localities in Ghana.
The accuracy and validity of the method were further ascertained by performing recovery studies via a standard addition method.
If smoking was allowed in a specific area, the questionnaire further ascertained the location and size of the restricted area.
The present work further ascertained previously reported haplogroups, and refined the phylogenetic tree of South Asia.
Accordingly, for each response variable, the main effects of sex and BMI, as well as their interaction, were further ascertained by general linear models (factorial design).
The status of nondiabetes was further ascertained by the absence of diabetes medication and diagnosis of diabetes, as documented in our electronic medical records (EMR).
