The phrase "already treated by" is correct and usable in written English.
It can be used when referring to something that has been addressed or handled previously, often in a formal or academic context.
Example: "The issue of climate change has already been treated by numerous researchers in various studies."
Alternatives: "previously addressed by" or "already discussed by".
The patients already treated by orthodontics were excluded.
PS is a promising material as one of a lignocellulosic feedstock for lactic acid production from the content of a large amount of short cellulosic fibers already treated by delignification of paper making.
This was due principally to the fact that a large proportion of patients considered for inclusion (up to half in each study) was already treated by corticosteroids at ICU admission.
At admission, 15 (14 %) were already treated by liposomal amphotericin B. Reasons for intensive care unit admission were hemodynamic failure in 484646 %), respiratory distress in 40 (38 %), neurologic disorder in seven (7 %) and close monitoring in nine (9 %).
The optimization of the sewage system, the occurring problems during operation, and the adequate corrective actions are also discussed, with suggestions of suitable processes (PCO, adsorption, constructed wetlands) for post-treatment of the petrochemical wastewater already treated by the activated sludge method.
The second category includes patients who are already treated by a cardiologist the moment the diagnosis 'heart failure' is made.
Conclusion: According to the usual clinical practice, septic neutropenic patients was already treated empirically by bitherapy including antipseudomonal or anti-MRSA if there is a skin or suspected catheter-related infection.
Climate and sustainability initiatives from the corporate world are already treated with suspicion by many (and often with good reason).
According to Jillian Modzeleski, a staff attorney at Brooklyn Defender Services, clients are already treated as criminals by the court.
Already treated diabetes mellitus by oral antidiabetic medication or insulin led to exclusion of these patients.
Participants who were already treated for diabetes by insulin, oral anti-diabetic agents, or a physician-prescribed diet were excluded.
