function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 72],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 24],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 18],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 101],
    ['Info Flora', 117],
    ['Jarvis, Charlie', 119],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 82],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 25],
    ['Linnaeus, Carolus', 100],
    ['M. Wakabayashi', 20],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 16],
    ['Smith, Gideon F.', 74],
    ['Smith, Gideon F. & Figueiredo, Estrela', 15],
    ['Smith, Gideon F. & Shtein, Ronen', 16],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 18],
    ['Other (116)', 243]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=1060)',
    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);