function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 1],
    ['Chamutiová, Tímea & Hamerlík, Ladislav & Bitušík, Peter', 1],
    ['Chertoprud, Mikhail V. & Palatov, Dmitry M.', 1],
    ['Donato, Mariano & Paggi, Analía C.', 1],
    ['Donato, Mariano & Zanotto Arpellino, Juan Pablo & Siri, Augusto', 4],
    ['Eiseman, Charles S. & Namayandeh, Armin & Linden, John Van Der', 4],
    ['Epler, John H.', 1],
    ['Ivkovic, Marija & Doric, Valentina & Baranov, Viktor', 3],
    ['Li, Xing & Wang, Xin-hua', 17],
    ['Namayandeh, Armin & Bilyj, Bohdan & Beresford, David V.', 1],
    ['Saether, Ole A.', 3],
    ['Som, Dipak K. & Das, Nirmalya & Hazra, Niladri', 1],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 3],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Van der Wulp, F. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);