TY - JOUR AU - Yang, C S; Chen, L; Lee, M J; Balentine, D; Kuo, M C; Schantz, S P TI - Blood and urine levels of tea catechins after ingestion of different amounts of green tea by human volunteers JO - Cancer Epidemiol Biomarkers Prev VL - 7 PY - 1998 SP - 351 EP - 354 ER -