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|      \\   / _ \\   /  ___||   / _ \\   | \| || 
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|  --  \\  | \_/ || | \\_\ || |  ___  || | .  || 
|______//   \___//   \____//  |_||  |_|| |_|\_|| 
`------`    `---`     `---`   `-`   `-`  `-` -`

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Text this: Comparison of appointment scheduling perspectives between cost minimization and service level constraint