1. Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
2. School of Health Care Management, Shandong University; Key Laboratory of Health Economics and Policy Research, NHFPC, Shandong University; Center for Health Management and Policy Research, Shandong University, Jinan, Shandong, China
3. Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
4. National Veterinary Institute, Uppsala, Sweden