Effect of advanced periodontal self-care in patients with early-stage periodontal diseases on endothelial function: An open-label, randomized controlled trial. oleh Ayako Okada, Takatoshi Murata, Khairul Matin, Meu Ariyoshi, Ryoko Otsuka, Mamiko Yamashita, Masayuki Suzuki, Rumi Wakiyama, Ken Tateno, Megumi Suzuki, Hitomi Aoyagi, Hiromi Uematsu, Akiko Imamura, Miki Kosaka, Tomoko Mizukaki, Tsutomu Sato, Hiroshi Kawahara, Nobuhiro Hanada