Correção de texto: sobre os médicos

I would ike to know if the following is correct:

"Throughout this presentation I'm going to utter some words about doctors.
By way of introduction I would like to point out that Doctors—also referred to as physicians and medical practitioners—are healthcare professionals who promote, maintain, and restore health through studying, diagnosing, and treating illnesses, injuries, and other physical ailments."


thank you in advance