RT Journal Article SR Electronic T1 Lung migration of contraceptive Implanon NXT JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e230987 DO 10.1136/bcr-2019-230987 VO 12 IS 7 A1 Mariana Carlos-Alves A1 Marina Gomes A1 Rita Abreu A1 Paula Pinheiro YR 2019 UL http://casereports.bmj.com/content/12/7/e230987.abstract AB