RT Journal Article SR Electronic T1 Low von Willebrand Factor–Associated Heavy Menstrual Bleeding JF AAP Grand Rounds JO AAP Grand Rounds FD American Academy of Pediatrics SP 54 OP 54 DO 10.1542/gr.44-5-54 VO 44 IS 5 YR 2020 UL http://aapgrandrounds.aappublications.org/content/44/5/54.abstract AB