function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ben-David, Tselila', 1],
    ['Minaei, Kambiz', 6],
    ['Minaei, Kambiz & Mound, Laurence', 1],
    ['Mirab-balou, M.', 13],
    ['Mirab-balou, Majid & Minaei, Kambiz & Chen, Xue-Xin', 1],
    ['Rasool, Iftekhar & Abdel-Dayem, Mahmoud S. & Alattal, Yehya Zaki', 8],
    ['Rasool, Iftekhar & Alattal, Yehya Zaki & Aldhafer, Hathal M.', 10],
    ['Zhang, Shimeng & Feng, Jinian', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=45)',
    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);