Symposium Sponsors   The Ritz-Carlton, St. Louis 100 Carondelet Plaza St. Louis, Missouri 63105 314-863-6300 or 1-800-241-3333 QMP has secured a block of rooms at special group rates are $189.00 for single or double occupancy. We currently have space available in the room block. If you have any difficulty in setting a reservation, please feel free to contact us (314-878-7808) and we would be happy to assist with your reservation.. Reference Quality Medical Publishing when making your reservation. Clayton The Ritz-Carlton, a luxury hotel, is conveniently located in Clayton, an upscale suburb of St. Louis. Clayton is home to more than 70 fine shops and art galleries in addition to an array of elegant American and ethnic restaurants; most are within walking distance of the hotel.