Studies of the “Average of normals” Method of Quality Control in Health Check-up - Hirano, Kumiko; Abe, Ryoko; Suzuki, Akiko; Inoue, Miwako; Yamasawa, Ikuhiro; Moroto, Keiko; Kobayashi, Nobuko; Tuburaoka, Sanae; Akahori, Ayako; Watanabe, Kahoru (Japanese journal of MHTS, 1995)