1. Department of Anatomy and Histology, School of Basic Medical Sciences; Tianjin Medical University; Tianjin China
2. TEDA International Cardiovascular Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Tianjin China
3. Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases; Tianjin Medical University; Tianjin China
4. Department of Biomedical Engineering; Indiana University-Purdue University Indianapolis; Indianapolis Indiana USA