which of the following factors contribute to the development of duodenal ulcer ?
a- Iodine 131
b- Iodine 125
c- Technitium 99
d- Phosphorus 32
answer : a . iodine 131 .
a- Iodine 131
b- Iodine 125
c- Technitium 99
d- Phosphorus 32
answer : a . iodine 131 .