Miriam John from Pengam Green, Cardiff is preparing for a four-month trip to the West African nation of Senegal where she will be volunteering as a hospital physician and medical capacity educator. The 33-year-old is traveling to the Africa Mercy, the world’s largest charity run hospital ship, which provides healthcare and training to developing countries. Miriam was inspired to start volunteering with Mercy Ships two years ago and this will be her fifth trip. Miriam says “I had always…