Satoko Ebina, Atsuko Omori, Ayako Tarakida, Tomoka Ogasawara, Mami Manabe, Sei-ichi Katagiri, Ikuo Kashiwakura. Effect of the umbilical cord blood acid-base status and gas values on the yield of mononuclear cells and CD34+ cells. The journal of obstetrics and gynaecology research. 2012. 38. 7. 997-1003