Below is a list of sources for professionals recognizing pedophilia as a sexual orientation.
Michael C. Seto:
Fred S. Berlin:
David Finkelhor (mentions it, not the focus):
J. Michael Bailey, Kevin J. Hsu, Paula A. Bernhard (another mention):
B4U-ACT (organization composed of multiple professionals):
Gilian Tenbergen, Matthias Wiitfoth, Helge Frieling, Jorge Ponseti, Martin Walter, Henrik Walter, Klaus M. Beier, Boris Schiffer, Tillmann H. C. Kruger:
Katarina Alanko, Benny Salo, Andreas Mokros, Pekka Santtila:
- Evidence for Heritability of Adult Men’s Sexual Interest in Youth under Age 16 from a Population-Based Extended Twin Design
Huge credit to @alwaysbe_kind for compiling this list of sources
Please feel free to discuss this below.