Bernard, A., Vyskocil, A. A., Mahieu, P., & Lauwerys, R. (1987). Assessment of urinary retinol-binding protein as an index of proximal tubular injury. Clinical Chemistry : international journal of molecular diagnostics and laboratory medicine, 33(6), 775-779. https://hdl.handle.net/2078.5/140504 (Original work published 1987)