function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 1],
    ['Bukejs, Andris', 1],
    ['Champion, George C.', 1],
    ['Endrödy-Younga, Sebastian', 1],
    ['Erichson, Wilhelm Ferdinand', 1],
    ['Hisamatsu, Sadatomo', 4],
    ['Kirejtshuk, Alexander G. & James, David G. & Heffer, Renay', 1],
    ['López-Guerrero, Irma', 2],
    ['Motschulsky, Victor de', 4],
    ['Samin, N.', 12],
    ['Smith, Trevor Randall', 17],
    ['Tian, Mingyi', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);