function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ebejer, Martin J.', 2],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Li, Wenliang & Bai, Yingming & Yang, Ding', 20],
    ['Li, Wenliang & Chen, Xulong & Yang, Ding', 4],
    ['Majnon, B. & F, A. & Saghaei, N. & Van, R.', 2],
    ['Merz, B. & Kofler, A.', 4],
    ['Sasakawa, Mitsuhiro', 1],
    ['Semelbauer, Marek & Kozánek, Milan', 5],
    ['Shi, Li & Gaimari, Stephen D. & Yang, Ding', 5],
    ['Shi, Li & Yang, Ding', 7],
    ['Silva, Vera Cristina', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);