function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boiteau, Pierre L. & Allorge, Lucile & Sevenet, T.', 2],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Jarvis, Charlie', 4],
    ['Linnaeus, Carolus', 1],
    ['Lorence, David H. & Butaud, Jean-Francois', 2],
    ['Markgraf, Friedrich', 2],
    ['Middleton, David J. & Regalado J, Jacinto C.', 3],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);