function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akash, S. & Purushothaman, P. & Madhavan, Manu & Ravi, Charan', 1],
    ['Al-Kandari, Manal & Anker, Arthur & Hussain, Sumaiah', 1],
    ['Khalaf, Norman Ali Bassam & Khalaf, Ola', 1],
    ['Li, Xinzheng & Bruce, Alexander J.', 2],
    ['Li, Xinzheng & Cleva, Régis & Poupin, Joseph', 1],
    ['Paramasivam, Purushothaman & Madhavan, Manu & Ajith Kumar, T. T.', 2],
    ['Wang, Yan-Rong & Chan, Tin-Yam & Sha, Zhong-Li', 2],
    ['Yokes, Baki & Galil, Bella S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);