"not only regarding" is correct and usable in written English.
You can use it to refer to two or more things that are related in some way. For example: I am interested in many topics, not only regarding sports, but also science and art.
In addition, I have learned so much, not only regarding archives and archiving but in personal and professional development.
Research on the molecular etiology of vulvar cancer has increased in the past years, not only regarding genetic alterations, but also epigenetic changes.
I am quite satisfied with physics life in Zurich, not only regarding the profes- sional aspect but also the spirit of camaraderie at the institute.
Such repression and the overall importance that China's leaders attach to the Clinton visit are measures of how insecure they are, not only regarding their own authority, but also regarding China's place in the world.
Yoked participants of these studies, however, were thwarted not only regarding autonomy but also, presumably, regarding perceived competence, as their feedback schedules were provided randomly, regarding good or bad trials.
Music psychotherapy may induce a positive evolution, not only regarding their main symptom, but also regarding their capacity to elaborate in an imaginary and symbolic manner, leading to changes in their fantasmatic organization.
The article then discusses the impact that these barriers have on the lives of wheelchair users, not only regarding issues of access but also the ways in which it affects social inclusion.
"The falling home price is gradually increasing the room for further policy relaxation, not only regarding the property sector," said Shi Qi, an analyst in Shanghai for CEBM, a Chinese financial advisory firm.
By the 1800s, feminist reformers were campaigning to change laws, minds and culture not only regarding sexual violence but also race – in American culture, rape was considered a crime committed against a chaste white woman, particularly by a black male stranger.
"I am fasting to object to mistruths, deceptions and inaction by both governments, not only regarding their shared responsibility for my arbitrary detention, but also because of the lack of any reasonable or valid effort to resolve this shameful ordeal," Gross had said in a telephoned statement to his legal team.
"I am fasting to object to mistruths, deceptions, and inaction by both governments, not only regarding their shared responsibility for my arbitrary detention, but also because of the lack of any reasonable or valid effort to resolve this shameful ordeal," Gross said in a telephoned statement to his legal team.
