title: Reply.
authors: University of Pittsburgh, Pittsburgh, Pennsylvania.
authors: Rohit
authors: R
authors: Aggarwal
authors: Boston University School of Medicine, Boston, Massachusetts.
authors: Tuhina
authors: T
authors: Neogi
authors: Toronto Western Hospital, Mount Sinai Hospital, and University of Toronto, Toronto, Ontario, Canada.
authors: Sindhu R
authors: SR
authors: Johnson
authors: American College of Rheumatology, Atlanta, Georgia.
authors: Amy
authors: A
authors: Miller
authors: Toronto Western and Mount Sinai Hospitals, The Hospital for Sick Children, and University of Toronto, Toronto, Ontario, Canada.
authors: Brian M
authors: BM
authors: Feldman