function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartholomew, Bruce & Almeda, Frank', 33],
    ['Becherer', 8],
    ['Binh, Hoang Thi & Ngoc, Nguyen Van & Bon, Trinh Ngoc', 3],
    ['Binh, Hoang Thi & Ngoc, Nguyen Van & Tagane, Shuichiro', 10],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 7],
    ['Denk, Thomas & Sami, Marco & Teodoridis, Vasilis', 4],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 7],
    ['Info Flora', 8],
    ['Jarvis, Charlie', 14],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 7],
    ['Kovar-Eder, Johanna & Kvaček, Zlatko & Teodoridis, Vasilis', 4],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 6],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 4],
    ['Suh, Soo-Jung', 10],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 18],
    ['Other (16)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=164)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);