A. Ogawa

Night-to-night variability of sleep latency significantly predicts the magnitude of subsequent change in sleep latency during placebo administration.

H. Urushihara, K. Kawakami, S. Hinotsu, 2011, Sleep medicine.

Does late morning waking-up affect sleep during the following night in patients with primary insomnia?

K. Kawakami, S. Hinotsu, A. Ogawa, 2013 .

Efficacy and safety of ramelteon in Japanese adults with chronic insomnia: a randomized, double-blind, placebo-controlled study

M. Uchiyama, N. Uchimura, H. Nagata, 2011, Expert review of neurotherapeutics.

Long-term safety and efficacy of ramelteon in Japanese patients with chronic insomnia.

M. Uchiyama, N. Uchimura, H. Nagata, 2011, Sleep medicine.

Night-to-night variability of sleep latency significantly predicts the magnitude of subsequent change in sleep latency during placebo administration.

H. Urushihara, K. Kawakami, S. Hinotsu, 2011, Sleep medicine.

Efficacy and tolerability of ramelteon in a double-blind, placebo-controlled, crossover study in Japanese patients with chronic primary insomnia

H. Kuwahara, Y. Sugita, T. Kanemura, 2011, Expert review of neurotherapeutics.