preferred_name: History of joint swelling, 3 or more peripheral joints for greater than 6 weeks duration
preferred_name_lc: history of joint swelling, 3 or more peripheral joints for greater than 6 weeks duration
label: History of joint swelling, 3 or more peripheral joints for greater than 6 weeks duration
label_lc: history of joint swelling, 3 or more peripheral joints for greater than 6 weeks duration