Participants in last year’s One Small Step walk for Prader-Willi research at the San Antonio Botanical Garden_credit Sergio Viroslav

Participants in last year's One Small Step walk for Prader-Willi research at the San Antonio Botanical Garden. Photo by Sergio Viroslav.

Participants in last year’s One Small Step walk for Prader-Willi research at the San Antonio Botanical Garden. Photo by Sergio Viroslav.

Participants in last year’s One Small Step walk for Prader-Willi research at the San Antonio Botanical Garden. Photo by Sergio Viroslav.