DNA Damage Caused by low Dose Methotrexate and Protective Effect of Folinic acid
YANG Jian-yi, LI Li, PENG Yun, et al
Carcinogenesis, Teratogenesis & Mutagenesis . 2004, (1): 24 -26 .  DOI: 10.3969/j.issn.1004-616x.2004.01.007