function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 29],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 14],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 9],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 35],
    ['Info Flora', 46],
    ['Jarvis, Charlie', 73],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 34],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 10],
    ['Linnaeus, Carolus', 45],
    ['Nikolić, Danijela & Kuzmanović, Nevena & Walter, Johannes', 12],
    ['Shtein, Ronen & Smith, Gideon F.', 8],
    ['Smith, Gideon F.', 74],
    ['Smith, Gideon F. & Figueiredo, Estrela', 15],
    ['Smith, Gideon F. & Shtein, Ronen', 16],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 14],
    ['Other (53)', 93]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=527)',
    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);