1. Department of Functional Pathology, Faculty of Medicine, Shimane University, Izumo, Japan
2. Department of Physiology, School of Medicine, Muhimbili University of Health and Allied Sciences, Dar Es Salaam, Tanzania
3. Institute of Laboratory Animals, Graduate School of Medicine, Kyoto University, Kyoto, Japan
4. Laboratory of Animal Reproduction and Development, Faculty of Science and Engineering, Iwate University, Morioka, Japan
5. Institute of Experimental Animal Sciences, Graduate School of Medicine, Osaka University, Osaka, Japan
6. Laboratory Animal Research Center, the Institute of Medical Science, The University of Tokyo, Tokyo, Japan