Looking for a pediatric cardiologist's second opinion on Márcio's persistent abdominal pain

Márcio was diagnosed with persistent abdominal pain in June. The local team has recommended a major procedure. We understand it's an important decision, and we'd like to be sure. We're asking if a pediatric cardiologist - anywhere in the world - would be willing to review Márcio's reports and give a short opinion (a call of 20 minutes or a written summary). We'd gladly pay for any cost to your practice that we can afford. We have scans, lab reports and the doctor's notes ready to share securely. We understand that you can't give formal medical advice without an examination, and we're simply looking for guidance on questions to ask and options to explore. Thanks for even thinking about it. Please ask me anything in the questions section. I'll answer honestly and quickly.