function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 29],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 8],
    ['Gillespie, Lynn J. & Soreng, Robert John & Cabi, Evren', 17],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 21],
    ['Info Flora', 26],
    ['Jarvis, Charlie', 14],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 25],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 8],
    ['Linnaeus, Carolus', 18],
    ['Olovona, Marina V. & Nikolin, E. G.', 40],
    ['Ortega-Olivencia, Ana & Devesa, Juan A.', 17],
    ['Soreng, Robert J. & Peterson, Paul M.', 37],
    ['Soreng, Robert J. & Sylvester, Steven P.', 12],
    ['Soreng, Robert John & Gillespie, Lynn J.', 9],
    ['Veldkamp, Jan Frederik', 12],
    ['Other (24)', 65]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=358)',
    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);