Table 1. Patient characteristics in the study.
Values are presented as number (%).
a)Grade for differentiation of tumor cells: I–II, well differentiated and moderately differentiated; III, poorly differentiated; IV, undifferentiated/anaplastic. b)None, unknown, and refused. c)A, adrenal gland; B, soft tissue including heart; C, retroperitoneum; D, mediastinum and other respiratory organs; E, other.