function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cedric A. Collingwood & Donat Agosti & Mostafa R. Sharaf', 1],
    ['Griebenow, Zachary', 5],
    ['Jimoh, Bunmi Omowumi & Gomez, Kiko & Kemabonta, Kehinde Abike', 1],
    ['Leong, Chi-Man & Yamane, Seiki & Guénard, Benoit', 1],
    ['Sharaf, Mostafa R. & Wetterer, James K. & Mohamed, Amr A.', 1],
    ['Wong, Mark K. L. & Guenard, Benoit', 1],
    ['Wong, Mark K. L. & McRae, Jane M.', 2],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);