function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 20],
    ['Abotsi, Komla Elikplim & Radji, Aboudou R. & Rouhan, Germinal', 10],
    ['Alston, Arthur Hugh Garfit', 1],
    ['Blume, Carl Ludwig von', 2],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 3],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 11],
    ['Cremers, Georges & Aupic, Cécile', 4],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 3],
    ['Info Flora', 2],
    ['Jarvis, Charlie', 14],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 2],
    ['Lorence, David H. & Wagner, Warren L. & Wood, Kenneth R.', 3],
    ['Rakotondrainibe, France & Jouy, Alain', 9],
    ['Zhang, Liang & Zhou, Xin-Mao & Gao, Xin-Fen & Zhang, Li-Bing', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 7],
    ['Other (12)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=105)',
    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);