Personally, I suspect it was PPHM. Hard to force the two together when it comes to sector expertise, but my reasons were:
PPHM touts having 200+ patents.
A lot of interrelationship in place between the two companies.
Based on market cap and future potential revenue, it's a toss up as to which is worth more (at least to me).
PPHM is on a major exchange (Naz).
IMO, FWIW