ALB and major depressive disorder: The second most cited article stated that six-week respiratory rehabilitation couldimprove respiratory function, quality of life, and anxiety in aged patients withCOVID-19, with a slight significant improvement in depression in this public.20 The third study identified a high prevalence of malnutrition in aged patientswith COVID-19 and concluded that nutritional support should be reinforced duringtreatment, especially for those with diabetes mellitus, low calf circumference, orlow albumin.21