1. San Diego (present study) Ohio;(Tanaka and Beutler,,1967
2. Milwaukee (Westring and Pisciotta, 1966) 'Chicago II';(Boivin, Beaujon; Galand;(Grossman et al; Worcester,1968
3. Tripler (Engstrom and Beutler, 1970)
4. Ramat-Gan (Ramot et al, 1969) Bat-Yam (Ramot et al, 1969) Ashdod;(Huskisson, Fulham,1970
5. Rotterdam (Rattazzi ect al, 1971)