has subject area Biopsy Bone Neoplasms Carcinoma, Squamous Cell Casts, Surgical Cobalt Isotopes Crutches Humans Laryngeal Neoplasms Lymphatic Metastasis Male Middle Aged Neoplasm Metastasis Neoplastic Cells, Circulating Skin Neoplasms Stress, Mechanical Time Factors Wounds and Injuries