双子の出生数が過去最多、IVFなど背景　研究で明らかに（字幕・13日）

01:42

01:32

01:23

02:56

03:57

00:57

02:29

00:46

01:47

00:40

00:41

01:02

00:58

01:13

01:39

01:16

01:21

01:54

01:40

01:58

01:14

01:01

01:37

01:42

03:14

03:11

01:02

01:20

01:10

01:03

02:54

01:40

01:32

00:45

02:06

00:42

00:41

03:01

01:47

01:41

02:03

01:59

01:32

02:10

01:51

01:49

07:59

02:02

00:52

00:37

01:39

01:12

02:23

02:22

01:32

02:13

02:06

01:49

02:12

01:32

01:26

01:06

01:19

01:41

01:18

01:08

00:55

01:06

01:01

01:20

01:20

01:24

00:55

01:09

01:30

02:10

00:30

01:00

01:40

01:09

02:39

01:03

01:45

02:51

00:52

01:32

01:59

02:52

01:20

01:30

02:27

02:43

03:22

01:36

01:01

01:32

01:24

01:40

01:00

01:31

02:05

01:20

01:03