function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Atfy, Haytham El & Abeed, Qusay & Uhl, Dieter', 1],
    ['Garrido-Benavent, Isaac & Chiva, Salvador & Bordenave, César D.', 1],
    ['Legrand, Julien & Pons, Denise & Nishida, Harufumi', 2],
    ['Li, Shu-Yin & Xu, Yuan-Zhao & Guo, Wen-Si & Zhu, Huan', 2],
    ['Sokoloff, Paul C. & Freebury, Colin E. & Hamilton, Paul B.', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=16)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);