function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baňař, Petr', 2],
    ['Baňař, Petr & Štys, Pavel', 2],
    ['Baňař, Petr & Štys, Pavel & Kolesnichenko, Yuliya', 2],
    ['Baňař, Petr & Štys, Pavel & Rahanitriniaina, Sahondra Lalao', 2],
    ['Carrasco, Juan Carlos & Caballero-Serrano, Veronica', 3],
    ['Fent, Meral & Kment, Petr & Çamur-Elipek, Belgin & Kirgiz, Timur', 2],
    ['Ghahari, Hassan & Moulet, Pierre & Ostovan, Hadi', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 3],
    ['Heiss, Ernst & Eckelt, Andreas & Lederwasch, Manfred', 3],
    ['Ishikawa, Tadashi & Saito, Masayuki U. & Kishimoto-Yamada, Keiko', 4],
    ['Kment, Petr & Kolínová, Zdislava', 2],
    ['Kment, Petr & Kolínová, Zdislava & Heiss, Ernst', 4],
    ['Krüger, Andreas', 7],
    ['Štys, Pavel & Baňař, Petr', 3],
    ['Štys, Pavel & Ř, Petr Ba Ň A', 3],
    ['Other (6)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    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);