RT Journal Article SR Electronic T1 Use of modified-citrate tube to rectify spurious coagulopathy in smoker’s polycythaemia: medical resolution of a dentist’s dilemma JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e246102 DO 10.1136/bcr-2021-246102 VO 15 IS 1 A1 Tushar Sehgal A1 Aditi Nanda A1 Shyam Prakash A1 Arulselvi Subramanian YR 2022 UL http://casereports.bmj.com/content/15/1/e246102.abstract AB