Disease-causing factors may broadly be classified into two groups .......... 1.......... factors and ........... 2 ........... factors. When the disease-causing factors ........... 3 ........... the body itself and have not ........... 4 ........... the body from any .......... 5 .......... sources, they are said to be intrinsic factors. The disease caused by intrinsic factors are also known as...........6 ............ or ........... 7 ............ Intrinsic factors may be ............ 8 .......... disorders ........... 9 ........... imbalances,........... 10..........., disorders, and ........... 11 ............. failure, failure of ..........12 .........., ..........13 ...........and so on.