The phrase "afterwards maintained" is correct and usable in written English.
It can be used to indicate that something was upheld or continued after a certain point in time.
Example: "The committee afterwards maintained their decision despite the objections raised by the members."
Alternatives: "subsequently upheld" or "later continued".
In this study, the total amount of poly(A) mRNA per cell increased suddenly from 5 min to 20 min after stress and, afterwards maintaining the level achieved (Fig. 1).
Training and, afterwards, maintaining competence has become a real challenge.
Afterwards, he maintained that the argumentative nature of the process was "just as it should be".
He pointedly praised the "brilliant", "professional" people who had whittled down the 60 submitted novels to find a winner, and said: "I could not have asked for five better judges". Afterwards, he maintained that the argumentative nature of the process was "just as it should be".
Approximately 500 L4-stage larvae animals were heat stressed for 0.5, 1, 1.5, 2 h at 36°C, and approximately 500 L2-stage larvae animals were heat stressed for 1 h or 2 h at 36°C and afterwards further maintained at 20��C.
It found that the agency had withdrawn its support for the plotters before the murder but had paid them $35,000 afterwards "to maintain the goodwill of the group".
Afterwards, she maintains a more informal relationship with the other characters as a fellow member of SeeD.
Parents who completed the programme experienced positive gains afterwards which were maintained 6 months later.
For the PI-group, this gain was already observed after 3 months of therapy and was maintained afterwards while the decrease observed for the PI-sparing group did not significant differ from zero.
The AT visited the patients during the first week after discharge, while contact afterwards was generally maintained by telephone calls to the patient, the closest caregiver, or representatives from the primary health care, at least once a week during a follow-up period of four weeks.
