TY - GEN AU - Bazex,J TI - The classification of psoriatic arthritis SN - 0190-9622 PY - 1998///0702 KW - Arthritis, Psoriatic KW - classification KW - Humans N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1016/s0190-9622(98)70176-8 ER -