Fig. 1

Proportional distribution of different immunosuppressive therapy regimens. 1) corticosteroid pulse therapy + maintenance therapy with oral corticosteroids. 2) oral corticosteroids only. 3) corticosteroid pulse therapy + maintenance therapy with oral corticosteroids + other immunosuppressants. 4) oral corticosteroids + other immunosuppressants. 5) other immunosuppressants only. 6) no immunosuppressants