Parathormone deficiency leads to:
1.  Decrease of $C{a}^{+2}$ level in blood
2.  Increase of $C{a}^{+2}$ level in blood
3.  Osteoporosis
4.  Hypercalcemia

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency: 
1. Relaxin – Gigantism
2. Prolactin – Cretinism
3. Parathyroid hormone – Tetany
4. Insulin – Diabetes insipidus