Kulsoom Nawaz, wife of former prime minister Nawaz Sharif is likely to undergo chemotherapy at the end of this week or the beginning of the next week. According to sources, Nawaz Sharif will leave for London today to remain with his wife during the treatment. He will spend the Eid days there and return home after 10 days. Sources said he would avoid long stay in London to shun the allegation of avoiding legal proceedings going on against him at home.