function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baiocchi, Daniele', 19],
    ['Baiocchi, Daniele & Magnani, Gianluca', 7],
    ['Barringer, Lawrence', 5],
    ['Bílý, Svatopluk', 49],
    ['Bílý, Svatopluk & Kubáň, Vítězslav', 15],
    ['Bílý, Svatopluk & Plachetka, Mikuláš', 11],
    ['Bílý, Svatopluk & Sakalian, Vladimir P.', 8],
    ['Carlton, Christopher E. & MacRae, Ted C. & Tishechkin, Alexey K.', 6],
    ['Forbicioni, Leonardo & Tormen, Nicola & Curletti, Gianfranco', 7],
    ['Hallinen, Marie J. & Steffens, Wayne P. & Schultz, Jennifer L.', 6],
    ['Obořil, Martin', 8],
    ['Obořil, Martin & Baňař, Petr', 6],
    ['Qi, Zhihao & Ai, Hongmu & He, Xueyou & Su, Rongxiang', 3],
    ['Svatopluk', 7],
    ['Ỹ, Svatopluk Bíl', 9],
    ['Other (12)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=181)',
    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);