function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 2],
    ['Chamutiová, Tímea & Hamerlík, Ladislav & Bitušík, Peter', 4],
    ['Chertoprud, Mikhail V. & Palatov, Dmitry M.', 1],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 2],
    ['Kobayashi, Tadashi & Endo, Kazuo', 2],
    ['Krasheninnikov, Andrey B. & Makarchenko, Eugenyi A.', 3],
    ['Magoga, Giulia & Montagna, Matteo & Marziali, Laura', 2],
    ['Makarchenko Usgs, Eugenyi A.', 2],
    ['Makarchenko, Eugenyi A.', 2],
    ['Makarchenko, Eugenyi A. & Hansen, Dean C.', 2],
    ['Makarchenko, Eugenyi A. & Palatov, Dmitry M.', 1],
    ['Makarchenko, Eugenyi A. & Semenchenko, Alexander A.', 27],
    ['Montagna, Matteo & Urbanelli, Sandra & Rossaro, Bruno', 21],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 13],
    ['Willassen, Endre', 4],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=92)',
    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);