Sayaka Sekine

Variation in estrogenic activity among fractions of a commercial nonylphenol by high performance liquid chromatography.

N. Yamashita, Yun-Seok Kim, T. Katase, 2004, Chemosphere.

Increase in the number of physicians and mortality/life expectancy in Japan

Sayaka Sekine, Takashi Nakamura, M. Okayama, 2012 .

Association between increases in number of physicians and the standard mortality ratio in medical administrative districts in Japan

Sayaka Sekine, Takashi Nakamura, M. Okayama, 2011 .