1.
Systemic lupus erythematosus on the Caribbean island of Curacao: an epidemiological investigation.
2.
Systemic lupus erythematosus. III. Observations on clinical renal involvement and follow up of renal function: Dutch experience with 110 patients studied prospectively.
Systemic lupus erythematosus. I. Outcome and survival: Dutch experience with 110 patients studied prospectively.
Systemic lupus erythematosus. II. Observations on the occurrence of exacerbations in the disease course: Dutch experience with 110 patients studied prospectively.