Characterization of Skin Microbiome Profile and it's Correlation to Radiation Dermatitis

Collection of skin culture samples using a sterile swab. the swab will gently rubbed on the skin on the 3 different skin areas. The target areas are i) regions surrounding the RT treatment area (if possible, not from the scar area or from skin folds areas), ii) a control site of the normal (healthy) breast , iii) a control area on the forehead.