Reference
- Hirayama , T . 1981 . Nonsmoking wives of heavy smokers have a higher risk of lung cancer: A study from Japan . British Medical Journal , 282 : 183 – 185 .
- Radiation Oncologist, Cancer Institute, Adyar, Madras, India. Dr Sharma is a former lecturer in the Department of Radiotherapy, Institute of Medical Sciences, BHU Varanasi, India.