20th Anniversary - 1993
XX. Lucerne, Switzerland - 1993 - Ruben Chuquimia, M.D.
XXI. Lima, Peru - 1994 - Anselmo Pineda, M.D.
XXII. Arequipa, Peru - 1995 - Efrain Montesinos, M.D.
XXIII. Ica, Peru - 1996 - Marcos Chertman, M.D.
XXIV. Chiclayo, Peru - 1997 - Victor V. Rozas, M.D.
XXV. Lima, Peru - 1998 - Edgar Malpartida, M.D.
XXVI. Cajamarca, Peru - 1999 - Juan Angelats, M.D.
XXVII. Piura, Peru - 2000 - Julio Lara-Valle, M.D.
XXVIII. Trujillo, Peru - 2001 - Lucio Flores, M.D.
XXIX. Orlando, FL - 2002 - Hugo R. Tapia, M.D.