TY  - GEN
AU  - KARN,M N
TI  - Twin data; a further study of birth weight, gestation time, maternal age, order of birth, and survival
PY  - 2003///0501
KW  - Birth Weight
KW  - Female
KW  - Humans
KW  - Maternal Age
KW  - Parturition
KW  - Twins
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1111/j.1469-1809.1953.tb02548.x
ER  -