02:59 duration 2 minutes 59 seconds
Lesson 8. Case-control studies - Part 3
21:42 duration 21 minutes 42 seconds
Lesson 8. Case-control studies - Part 1
25:53 duration 25 minutes 53 seconds
Lesson 7. Cohort study - Part 2
13:21 duration 13 minutes 21 seconds
Lesson 7. Cohort study - Part 1
01:18 duration 1 minute 18 seconds
Emad E Tantawy's PHS550 Introduction
00:58 duration 58 seconds
Anna Marie Cozzi's PHS550 Introduction