Reference values of haemostasis related factors of healthy Japanese adults. I: Circadian fluctuation - Akiyama, Y; Kazama, M; Tahara, C; Shimazu, C; Otake, J; Kamei, K; Nakatake, T; Sakurai, N; Yasumuro, Y; Suzuki, S; Maeba, E; Nishida, T (Thromb Res, 1990)