PT - JOURNAL ARTICLE AU - Gayatri Raghuram AU - Dipak Mukherjee AU - Kanwar Pannu AU - Sudhir Bhusari TI - Unexpected migration AID - 10.1136/thoraxjnl-2017-210866 DP - 2017 Dec 06 TA - Thorax PG - thoraxjnl-2017-210866 4099 - http://thorax.bmj.com/content/early/2017/12/06/thoraxjnl-2017-210866.short 4100 - http://thorax.bmj.com/content/early/2017/12/06/thoraxjnl-2017-210866.full