1. Department of Pathology, Pushpagiri Institute of Medical Sciences and Research Centre, Tiruvalla, Kerala 689101, India
2. Department of Pathology, Government Medical College, Thrissur, Kerala 680596, India
3. Department of Oncology, Government Medical College, Alappuzha, Kerala 688005, India
4. Department of Pathology, Government Medical College, Alappuzha, Kerala 688005, India