NVS introductory course in-course handout materials Handout 1 Session 1 scenarios Handout 2 session 2 scenarios Handout 3 FELASA rodent health monitoring guidelines Handout 3a Health screen example 1 Handout 3b Health screen Example 2 Handout 3c Health screen Example 3 Handout 4 Session 3 scenarios Handout 5 Session 4 PPL amendment Handout 6 session 5 workshop1 scenarios