function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bousquet, Yves', 5],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 1],
    ['Ito, Noboru', 18],
    ['Ito, Noboru & Liang, Hongbin', 1],
    ['Kataev, Boris M.', 3],
    ['Kataev, Boris M. & Hongbin, Liang & Wrase, David W.', 18],
    ['Kim, Dooyoung & Suh, Sang Jae', 8],
    ['Merene, Yeshitla & Lorenz, Wolfgang & Opgenoorth, Lars', 4],
    ['Schmidt, Joachim', 19],
    ['Wrase, DW', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=78)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);