by Corine T. Netzer $7.00
by Prof. DR. dr. S.M. Lumbantobing, SpS(K), SpKJ $6.00
by Prof. C.J. Ebrahim $6.00
by Prof. Dr. dr. Sarwono Waspadji, SpPD-KEMD $9.00
by dr. Yoannes Y. Laban $5.00
by Syaifuddin $12.00