Twin pregnancy, dyspnea, cyanosis, and a heart murmur.
Hallak
Omar K
OK
Louisiana State University Health Sciences Center, New Orleans, Louisiana 70112, USA.
Helmcke
Frederick R
FR
Amant
St Marshall
SM
Bayhi
Daniel
D
Diethelm
Lisa
L
Kelley
Glenn P
GP
Clancy
D Luke
DL