%0 Letter %T Phakomatosis pigmentovascularis IIb (phakomatosis cesioflammea) associated with the absence of infrarenal inferior vena cava. %A Pan Y %A Jiang X %J Int J Dermatol %V 60 %N 5 %D May 2021 %M 33314074 %F 3.204 %R 10.1111/ijd.15334 %X