NEW DELHI: Tabla maestro Zakir Hussain has been admitted to the ICU of a San Francisco hospital with heart related problems, his friend and flautist Rakesh Chaurasia said on Sunday. The 73-year-old US-based musician, who has taken the tabla to the global stage, had been having blood pressure issues, added Hussain's manager Nirmala Bachani. "He has been admitted to a …