Egg n = 260, 74.3% Yes, exceptional Preservatives n = 91, 26% Yes, exceptional Microbial antigens n = 68, 19.4% Yes Gelatin n = 43, 12.2% Yes Aminoglycosides n = 37, 10.6% Yes, exceptional Aluminium hydroxide n = 27, 7.7% Never described Latex n = 22, 6.3% Yes Don't know n = 78, 22.3% -1236 | CARSIN ET AL.