function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aptroot, André & Souza, Maria Fernanda', 1],
    ['Kukwa, Martin & Rodriguez-Flakus, Pamela & Aptroot, Andre', 2],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 3],
    ['Simijaca, Diego & Lücking, Robert & Moncada, Bibiana', 2],
    ['Soto-Medina, Edier & Aptroot, André & Lücking, Robert', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);