Sibs affected with BPII are more likely than sibs with BPI to share the linked region on chromosome 18q21
Journal article published in 1998 by
F. J. McMahon 
,
S. G. Simpson,
M. G. McInnis,
D. A. MacKinnon,
DePaulo
,
S. G. Simpson,
M. G. McInnis,
D. A. MacKinnon,
DePaulo
