RT Journal Article SR Electronic T1 Cigarette smoking increases persistent pain intensity and interference, impairs function and sleep JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 112 OP 112 DO 10.1136/ebnurs-2019-103174 VO 23 IS 4 A1 Felicia Cox YR 2020 UL http://ebn.bmj.com/content/23/4/112.abstract AB