1, with different roles: the witness refers to accompanying the patient to the hospital, recording the situation during the visit, and providing the doctor with information such as the patient's medical history and drug allergy history, while the summarizer refers to summarizing the visit process and recording it in the medical record after the visit.
2. Different responsibilities: the witness's duty is to accompany the patient to the hospital, record the situation during the visit, and provide the doctor with information such as the patient's medical history and drug allergy history, while the summarizer's duty is to summarize the visit after the visit and record the summary in the medical record.