From Terry Freedman

Sorry to tell you that Alberto Chattas passed away from cancer a couple of years ago. I was trying to reach him to arrange a visit and found his obit.

Alberto Chattas,
ajchattas@gmail.com, ajchattas@fibertel.com.ar,
Beruti 3825 PB 1, Buenos Aires, Argentina, 1425,
+54 11 48059538,
Birthday: 6/29/1943,
Occupation: MD Pediatrician