Megastar Amitabh Bachchan is once again standing up for a health cause. After successfully creating awareness for polio eradication he took up many causes like head injuries and tuberculosis and created awareness about them. This time around he is taking part in 'maternal and child mortality' awareness campaign of Andhra Pradesh Government. (Read: Why is Amitabh Bachchan truly the Social Media Person of the Year ) Health Minister Kamineni Srinivas informed that the Principal Secretary (Health) will visit Bachchan in Mumbai with regard to the campaign. The Government had earlier announced the 72-year-old popular actor who is brand ambassador for