ON-LINE COMPUTER SERVICES IN THE FIELD OF MEDICAL AND DENTAL PRACTICE MANAGEMENT, INCLUDING RECORD-KEEPING, PATIENT SCHEDULING, PATIENT SCREENING, OBTAINING PATIENT INFORMATION, AND MEDICAL INSURANCE VERIFICATION; COMPUTERIZED DATABASE MANAGEMENT RELATING TO MEDICAL AND DENTAL PRACTICES; AND PROMOTING THE GOODS AND SERVICES OF OTHERS BY PLACING ADVERTISEMENTS AND PROMOTIONAL INFORMATION IN AN ELECTRONIC SITE ACCESSED THROUGH A GLOBAL COMPUTER NETWORK