1. Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan.
2. Departamento de Bacteriologia-Micologia, Instituto de Medicina Tropical “Pedro Kourí,” Havana, Cuba.
3. Department of Clinical Laboratory, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
4. Department of Clinical Laboratory Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.