function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bakali, A. Homrani & Susanna, A.', 3],
    ['Bogdanovic, Sandro & Borsic, Igor & Ljubicic, Ivica', 3],
    ['Brullo, Salvatore & Cambria, Salvatore & Crisafulli, Alessandro', 4],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 12],
    ['Domina, Gianniantonio & Barone, Giulio & Gristina, Emilio Di', 4],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 32],
    ['Info Flora', 32],
    ['Jarvis, Charlie', 51],
    ['Jeanmonod, Daniel & Schlüssel, André', 6],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 23],
    ['Negaresh, Kazem', 6],
    ['Negaresh, Kazem & Yousefi, Zohreh & Kaya, Yusuf', 22],
    ['Ranjbar, Massoud & Negaresh, Kazem', 12],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 49],
    ['Shuka, Lulezim & Tan, Kit', 6],
    ['Other (19)', 25]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=290)',
    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);