function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Háva, Jiří', 7],
    ['Li, Yan-Da & Tihelka, Erik & Dahan, Loïc & Huang, Di-Ying', 8],
    ['Motschulsky, Victor de', 1],
    ['Sharp, David', 1],
    ['Yoshitomi, Hiroyuki', 1],
    ['Yoshitomi, Hiroyuki Dr. & Kishimoto, Toshio & Lee, Chi-Feng Dr.', 2],
    ['Zahradník, Petr & Háva, Jiří', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);