Abstract

References
1.
Aggett
P J
Atherton
D J
More
J
Davey
J
Delves
H T
Harries
J T
(1980 ) Archives of Disease in Childhood 55 , 547 –550 .
2.
Athanasiou
A
Shepp
M A
Necheles
T F
(1977 ) Lancet ii , 616 .
3.
Ekberg
M
Jeppsson
J-O
Denneberg
T
(1974 ) Acta medica Scandinavica 195 , 415 –419 .
4.
Klingberg
W G
Prasad
A S
Oberleas
D
(1976 ) In: Trace Elements in Human Health and Disease , vol 1 . Ed.
Prasad
A S
. Academic Press , London ; pp 51 –65 .
5.
Leigh
I M
Sanderson
K V
Atherton
D J
Wells
R S
(1979 ) British Journal of Dermatology 101 , Suppl 17 ; pp 73 –75 .
6.
Moynahan
E J
(1974 ) Lancet ii , 399 –400 .
7.
Muehrcke
R C
(1956 ) British Medical Journal i , 1327 .
8.
Perry
H M
Schroeder
H A
(1957 ) American Journal of Medicine 22 , 168 –172 .
9.
Pfeiffer
C C
Jenney
E H
(1974 ) Journal of the American Medical Association 228 , 157 .
10.
Weismann
K
(1980 ) In: Recent Advances in Dermatology , vol 5 . Ed.
Rook
A J
Savin
J
. Churchill Livingstone , Edinburgh ; pp 109 –129 .
11.
Zaias
N
(1980 ) The Nail in Health and Disease . MTP Press , Lancaster ; pp 56 –57 .
