Department of Internal Medicine Norwalk Hospital Norwalk CT USA;
Texas Oculoplastics Consultants TOC Eye & Face Austin TX USA;
Department of Internal Medicine Division of Pulmonary and Critical Care East Tennessee State University Johnson City TN USA;
Department of Family Medicine East Tennessee State University Johnson City TN USA;
Recovery Associates Johnson City TN USA;
Department of Pharmacy Johnson City Medical Center Johnson City TN USA;
Department of Internal Medicine Division of Infectious Diseases East Tennessee State University Johnson City TN USA;
Vitamin D; Vitamin D Deficiency; Vitamin D Insufficiency; Northeast Tennessee;