function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Binda, Maria Grazia & Pilato, Giovanni', 1],
    ['Fontoura, Paulo & Rubal, Marcos & Veiga, Puri', 1],
    ['Guil, Noemí', 1],
    ['Gąsiorek, Piotr & Stec, Daniel & Morek, Witold', 1],
    ['Kaczmarek, Łukasz', 4],
    ['Kaczmarek, Łukasz & Gołdyn, Bartłomiej & Prokop, Zofia M.', 1],
    ['Kaczmarek, Łukasz & Jakubowska, Natalia & Michalczyk, Łukasz', 1],
    ['Kaczmarek, Łukasz & Michalczyk, Łukasz & Diduszko, Dawid', 1],
    ['Kaczmarek, Łukasz & Michalczyk, Łukasz & Mcinnes, Sandra J.', 5],
    ['Li, Xiaochen', 1],
    ['Meyer, Harry A. & Hinton, Juliana G.', 2],
    ['Moreno, Antonio & Roszkowska, Milena & García, Mario Alberto', 1],
    ['Pilato, Giovanni & D’Urso, Vera & Lisi, Oscar', 1],
    ['Pilato, Giovanni & Kiosya, Yevgen & Lisi, Oscar', 3],
    ['Pilato, Giovanni & Lisi, Oscar & Binda, Maria Grazia', 1],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    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);