function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 15],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 7],
    ['Gousiadou, Chryssoula & Kokubun, Tetsuo & Albach, Dirk C.', 6],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 45],
    ['Info Flora', 27],
    ['Jarvis, Charlie', 81],
    ['Khamar, Hamid & Oualidi, Jalal El & Touhami, Amina Ouazzani', 35],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 20],
    ['Linnaeus, Carolus', 10],
    ['Macià, Ramon & Ylla, Josep & Gastón, Javier & Huertas, Manuel', 6],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 7],
    ['Sotoodeh, Arash & Attar, Farideh & Andalo, Christophe', 7],
    ['Volynkin, Anton V.', 7],
    ['Volynkin, Anton V. & Černý, Karel', 6],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 9],
    ['Other (43)', 77]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=365)',
    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);