RT Journal Article SR Electronic T1 Acanthosis nigricans at sites of insulin injection in a man with diabetes JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1390 OP E1390 DO 10.1503/cmaj.180705 VO 190 IS 47 A1 Yuanshen Huang A1 Morvarid Hessami-Booshehri YR 2018 UL http://www.cmaj.ca/content/190/47/E1390.abstract