The number of female smokers in Pakistan has tended to be very low when compared to men who smoke. But anti-smoking campaigners say there has been a five percent increase in the number of women smokers in Pakistan over the last three years. In Pakistan's conservative society, women who smoke are often frowned upon, which means that many have to smoke in secret. BBC Urdu's Iram Abbasi reports. BBC News - The number of female smokers in Pakistan 'is on the rise'